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papermc/Spigot-Server-Patches/0459-Mid-Tick-Chunk-Tasks-Speed-up-processing-of-chunk-lo.patch

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Rebuild all patches using the new rebuild pattern
2020-05-06 09:48:49 +00:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
From: Aikar <aikar@aikar.co>
Date: Thu, 9 Apr 2020 00:09:26 -0400
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
Subject: [PATCH] Mid Tick Chunk Tasks - Speed up processing of chunk loads and
generation
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
Credit to Spotted for the idea
A lot of the new chunk system requires constant back and forth the main thread
to handle priority scheduling and ensuring conflicting tasks do not run at the
same time.
The issue is, these queues are only checked at either:
A) Sync Chunk Loads
B) End of Tick while sleeping
This results in generating chunks sitting waiting for a full tick to
complete before it will even start the next unit of work to do.
Additionally, this also delays loading of chunks until this same timing.
We will now periodically poll the chunk task queues throughout the tick,
looking for work to do.
We do this in a fair method that considers all worlds, not just the one being
ticked, so that each world can get 1 task procesed each before the next pass.
In a view distance of 15, chunk loading performance was visually faster on the client.
Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
diff --git a/src/main/java/co/aikar/timings/MinecraftTimings.java b/src/main/java/co/aikar/timings/MinecraftTimings.java
Rebuild all patches using the new rebuild pattern
2020-05-06 09:48:49 +00:00
index 223d3b1125d0781758c45c6b469e6cccd13f187a..37341d2d2e7010b403708b6fc52524e8e36492c5 100644
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
--- a/src/main/java/co/aikar/timings/MinecraftTimings.java
+++ b/src/main/java/co/aikar/timings/MinecraftTimings.java
@@ -13,6 +13,7 @@ import java.util.Map;
public final class MinecraftTimings {
public static final Timing serverOversleep = Timings.ofSafe("Server Oversleep");
+ public static final Timing midTickChunkTasks = Timings.ofSafe("Mid Tick Chunk Tasks");
public static final Timing playerListTimer = Timings.ofSafe("Player List");
public static final Timing commandFunctionsTimer = Timings.ofSafe("Command Functions");
public static final Timing connectionTimer = Timings.ofSafe("Connection Handler");
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
Implement Chunk Priority / Urgency System for Chunks Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
2020-05-19 08:01:53 +00:00
index f1b41e16c8ce8323a896339c5d822f8ff7d8f7e6..f8f225e18fa38cad917f52a379233e0a7a869b07 100644
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
Implement Chunk Priority / Urgency System for Chunks Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
2020-05-19 08:01:53 +00:00
@@ -425,4 +425,9 @@ public class PaperConfig {
Clean up Timings and Async Chunk Configs Renames a bunch of timings to be more appropriate for the new environment. Many things dealt with sync loads which wasn't correct anymore. adjusted timings to be a little bit more accurate here. Also cleaned up old 1.13 async chunks configs so people won't keep thinking they can change some of those configs when they can't.
2020-04-26 06:05:41 +00:00
log("Async Chunks: Enabled - Chunks will be loaded much faster, without lag.");
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
}
}
+
+ public static int midTickChunkTasks = 1000;
+ private static void midTickChunkTasks() {
+ midTickChunkTasks = getInt("settings.chunk-tasks-per-tick", midTickChunkTasks);
+ }
}
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
Implement Chunk Priority / Urgency System for Chunks Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
2020-05-19 08:01:53 +00:00
index 8f849d83d08b39f1cd9184f484a2089a7a3124ef..377d554553ce81f66207541d963f826867e66592 100644
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
Fix collision checks on spawning hanging entities and null on async chunk loads getCubes will now always load chunks getChunk with gen false will now not throw error Fixes #3368 Fixes #3364
2020-05-14 08:58:47 +00:00
@@ -688,6 +688,7 @@ public class ChunkProviderServer extends IChunkProvider {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
this.world.getMethodProfiler().enter("purge");
this.world.timings.doChunkMap.startTiming(); // Spigot
this.chunkMapDistance.purgeTickets();
+ this.world.getMinecraftServer().midTickLoadChunks(); // Paper
this.tickDistanceManager();
this.world.timings.doChunkMap.stopTiming(); // Spigot
this.world.getMethodProfiler().exitEnter("chunks");
Fix collision checks on spawning hanging entities and null on async chunk loads getCubes will now always load chunks getChunk with gen false will now not throw error Fixes #3368 Fixes #3364
2020-05-14 08:58:47 +00:00
@@ -697,6 +698,7 @@ public class ChunkProviderServer extends IChunkProvider {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
this.world.timings.doChunkUnload.startTiming(); // Spigot
this.world.getMethodProfiler().exitEnter("unload");
this.playerChunkMap.unloadChunks(booleansupplier);
+ this.world.getMinecraftServer().midTickLoadChunks(); // Paper
this.world.timings.doChunkUnload.stopTiming(); // Spigot
this.world.getMethodProfiler().exit();
this.clearCache();
Fix collision checks on spawning hanging entities and null on async chunk loads getCubes will now always load chunks getChunk with gen false will now not throw error Fixes #3368 Fixes #3364
2020-05-14 08:58:47 +00:00
@@ -755,7 +757,7 @@ public class ChunkProviderServer extends IChunkProvider {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
entityPlayer.playerNaturallySpawnedEvent.callEvent();
};
// Paper end
- this.playerChunkMap.forEachVisibleChunk((playerchunk) -> { // Paper - safe iterator incase chunk loads, also no wrapping
+ final int[] chunksTicked = {0}; this.playerChunkMap.forEachVisibleChunk((playerchunk) -> { // Paper - safe iterator incase chunk loads, also no wrapping
Optional<Chunk> optional = ((Either) playerchunk.b().getNow(PlayerChunk.UNLOADED_CHUNK)).left();
if (optional.isPresent()) {
Fix collision checks on spawning hanging entities and null on async chunk loads getCubes will now always load chunks getChunk with gen false will now not throw error Fixes #3368 Fixes #3364
2020-05-14 08:58:47 +00:00
@@ -838,6 +840,7 @@ public class ChunkProviderServer extends IChunkProvider {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
this.world.timings.chunkTicks.startTiming(); // Spigot // Paper
this.world.a(chunk, k);
this.world.timings.chunkTicks.stopTiming(); // Spigot // Paper
+ if (chunksTicked[0]++ % 10 == 0) this.world.getMinecraftServer().midTickLoadChunks(); // Paper
}
}
});
Fix collision checks on spawning hanging entities and null on async chunk loads getCubes will now always load chunks getChunk with gen false will now not throw error Fixes #3368 Fixes #3364
2020-05-14 08:58:47 +00:00
@@ -979,6 +982,41 @@ public class ChunkProviderServer extends IChunkProvider {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
super.executeTask(runnable);
}
+ // Paper start
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
+ private long lastMidTickChunkTask = 0;
+ public boolean pollChunkLoadTasks() {
+ if (com.destroystokyo.paper.io.chunk.ChunkTaskManager.pollChunkWaitQueue() || ChunkProviderServer.this.world.asyncChunkTaskManager.pollNextChunkTask()) {
+ try {
+ ChunkProviderServer.this.tickDistanceManager();
+ } finally {
+ // from below: process pending Chunk loadCallback() and unloadCallback() after each run task
+ playerChunkMap.callbackExecutor.run();
+ }
+ return true;
+ }
+ return false;
+ }
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
+ public void midTickLoadChunks() {
+ MinecraftServer server = ChunkProviderServer.this.world.getMinecraftServer();
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
+ // always try to load chunks, restrain generation/other updates only. don't count these towards tick count
+ //noinspection StatementWithEmptyBody
+ while (pollChunkLoadTasks()) {}
+
Implement Chunk Priority / Urgency System for Chunks Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
2020-05-19 08:01:53 +00:00
+ if (System.nanoTime() - lastMidTickChunkTask < 200000) {
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
+ return;
+ }
+
+ for (;server.midTickChunksTasksRan < com.destroystokyo.paper.PaperConfig.midTickChunkTasks && server.canSleepForTick();) {
+ if (this.executeNext()) {
+ server.midTickChunksTasksRan++;
+ lastMidTickChunkTask = System.nanoTime();
+ } else {
+ break;
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
+ }
+ }
+ }
+ // Paper end
+
@Override
protected boolean executeNext() {
// CraftBukkit start - process pending Chunk loadCallback() and unloadCallback() after each run task
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
Implement Chunk Priority / Urgency System for Chunks Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
2020-05-19 08:01:53 +00:00
index f9faa30ef914b1dd2dada9b7d89e80b34d2f1d0d..f9694d188cc61f123fca4d54bf14fb7466b06a6c 100644
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
Foundational work for Future Memory usage improvements This commit doesn't do much on its own, but adds a new Java Cleaner API that lets us hook into Garbage Collector events to reclaim pooled objects and return them to the pool. Adds framework for Network Packets to know when a packet has finished dispatching to get an idea when a packet is done sending to players. Rewrites PooledObjects impl to properly respect max pool size and remove almost all risk of contention. Bumps the Paper Async Task Queue to use 2 threads, and properly shuts it down on shutdown.
2020-05-17 01:38:19 +00:00
@@ -910,6 +910,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
// Paper end
tickSection = curTime;
}
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
+ midTickChunksTasksRan = 0; // Paper
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
// Spigot end
//MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit // Paper - don't overwrite current tick time
Foundational work for Future Memory usage improvements This commit doesn't do much on its own, but adds a new Java Cleaner API that lets us hook into Garbage Collector events to reclaim pooled objects and return them to the pool. Adds framework for Network Packets to know when a packet has finished dispatching to get an idea when a packet is done sending to players. Rewrites PooledObjects impl to properly respect max pool size and remove almost all risk of contention. Bumps the Paper Async Task Queue to use 2 threads, and properly shuts it down on shutdown.
2020-05-17 01:38:19 +00:00
@@ -980,7 +981,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
}
- private boolean canSleepForTick() {
+ public boolean canSleepForTick() { // Paper
// CraftBukkit start
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
if (isOversleep) return canOversleep();// Paper - because of our changes, this logic is broken
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
return this.forceTicks || this.isEntered() || SystemUtils.getMonotonicMillis() < (this.ac ? this.ab : this.nextTick);
Foundational work for Future Memory usage improvements This commit doesn't do much on its own, but adds a new Java Cleaner API that lets us hook into Garbage Collector events to reclaim pooled objects and return them to the pool. Adds framework for Network Packets to know when a packet has finished dispatching to get an idea when a packet is done sending to players. Rewrites PooledObjects impl to properly respect max pool size and remove almost all risk of contention. Bumps the Paper Async Task Queue to use 2 threads, and properly shuts it down on shutdown.
2020-05-17 01:38:19 +00:00
@@ -1010,6 +1011,23 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
});
}
+ // Paper start
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
+ public int midTickChunksTasksRan = 0;
+ private long midTickLastRan = 0;
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
+ public void midTickLoadChunks() {
Implement Chunk Priority / Urgency System for Chunks Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
2020-05-19 08:01:53 +00:00
+ if (!isMainThread() || System.nanoTime() - midTickLastRan < 200000) {
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
+ // only check once per 0.25ms incase this code is called in a hot method
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
+ return;
+ }
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
+ try (co.aikar.timings.Timing ignored = co.aikar.timings.MinecraftTimings.midTickChunkTasks.startTiming()) {
+ for (WorldServer value : this.getWorlds()) {
+ value.getChunkProvider().serverThreadQueue.midTickLoadChunks();
+ }
+ midTickLastRan = System.nanoTime();
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
+ }
+ }
+ // Paper end
+
@Override
protected TickTask postToMainThread(Runnable runnable) {
return new TickTask(this.ticks, runnable);
Foundational work for Future Memory usage improvements This commit doesn't do much on its own, but adds a new Java Cleaner API that lets us hook into Garbage Collector events to reclaim pooled objects and return them to the pool. Adds framework for Network Packets to know when a packet has finished dispatching to get an idea when a packet is done sending to players. Rewrites PooledObjects impl to properly respect max pool size and remove almost all risk of contention. Bumps the Paper Async Task Queue to use 2 threads, and properly shuts it down on shutdown.
2020-05-17 01:38:19 +00:00
@@ -1096,6 +1114,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
// Paper start - move oversleep into full server tick
isOversleep = true;MinecraftTimings.serverOversleep.startTiming();
this.awaitTasks(() -> {
+ midTickLoadChunks(); // will only do loads since we are still considered !canSleepForTick
return !this.canOversleep();
});
isOversleep = false;MinecraftTimings.serverOversleep.stopTiming();
Foundational work for Future Memory usage improvements This commit doesn't do much on its own, but adds a new Java Cleaner API that lets us hook into Garbage Collector events to reclaim pooled objects and return them to the pool. Adds framework for Network Packets to know when a packet has finished dispatching to get an idea when a packet is done sending to players. Rewrites PooledObjects impl to properly respect max pool size and remove almost all risk of contention. Bumps the Paper Async Task Queue to use 2 threads, and properly shuts it down on shutdown.
2020-05-17 01:38:19 +00:00
@@ -1178,13 +1197,16 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
}
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
protected void b(BooleanSupplier booleansupplier) {
+ midTickLoadChunks(); // Paper
MinecraftTimings.bukkitSchedulerTimer.startTiming(); // Spigot // Paper
this.server.getScheduler().mainThreadHeartbeat(this.ticks); // CraftBukkit
MinecraftTimings.bukkitSchedulerTimer.stopTiming(); // Spigot // Paper
+ midTickLoadChunks(); // Paper
this.methodProfiler.enter("commandFunctions");
MinecraftTimings.commandFunctionsTimer.startTiming(); // Spigot // Paper
this.getFunctionData().tick();
MinecraftTimings.commandFunctionsTimer.stopTiming(); // Spigot // Paper
+ midTickLoadChunks(); // Paper
this.methodProfiler.exitEnter("levels");
Iterator iterator = this.getWorlds().iterator();
Foundational work for Future Memory usage improvements This commit doesn't do much on its own, but adds a new Java Cleaner API that lets us hook into Garbage Collector events to reclaim pooled objects and return them to the pool. Adds framework for Network Packets to know when a packet has finished dispatching to get an idea when a packet is done sending to players. Rewrites PooledObjects impl to properly respect max pool size and remove almost all risk of contention. Bumps the Paper Async Task Queue to use 2 threads, and properly shuts it down on shutdown.
2020-05-17 01:38:19 +00:00
@@ -1195,7 +1217,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
processQueue.remove().run();
}
MinecraftTimings.processQueueTimer.stopTiming(); // Spigot
-
+ midTickLoadChunks(); // Paper
MinecraftTimings.timeUpdateTimer.startTiming(); // Spigot // Paper
// Send time updates to everyone, it will get the right time from the world the player is in.
// Paper start - optimize time updates
Foundational work for Future Memory usage improvements This commit doesn't do much on its own, but adds a new Java Cleaner API that lets us hook into Garbage Collector events to reclaim pooled objects and return them to the pool. Adds framework for Network Packets to know when a packet has finished dispatching to get an idea when a packet is done sending to players. Rewrites PooledObjects impl to properly respect max pool size and remove almost all risk of contention. Bumps the Paper Async Task Queue to use 2 threads, and properly shuts it down on shutdown.
2020-05-17 01:38:19 +00:00
@@ -1238,9 +1260,11 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
Improve mid tick chunk loading, Fix Oversleep, other improvements Process loads outside of any canSleep check. Original intent was to only apply those restrictions to generations but realized I had some checks higher up the call chain. Reworked the back off strategy to just run every 1 millisecond per world, and to apply the per tick limit to generations only. This guarantees that your chunk will load with at most around 1ms delay. Additionally, fire midTick processing in a few more places, notably the oversleep section so we can keep processing loads here too which has a large up to 50ms window... Speaking of oversleep, we had a bug in our implementation changes for Timings that caused oversleep to not sleep the correct amount. Because we now moved it into the NEXT tick instead of THIS tick, the value of nextTick had already been increased to +50ms, resulting in the risk of sleeping more than it should, but, more importantly, this caused every task that was trying to NOT run during oversleep to actually run during oversleep. This is now fixed. Another small tweak is to the /tps command, to no longer show the star when TPS is right at 20. Due to ineffeciencies in the sleep precision, TPS is commonly 20.02. This causes the star to show up almost constantly, so now only show it if we actually hit a real "catchup". This commit also improves the changes to the CallbackExecutor, in that it now is also recursion safe. It was possible that the executor could run tasks out of desired order if the executor task scheduled more executor tasks. We solve this by ensuring new additions do not enter the currently iterated queue. Each depth level will have its own queue. Fixes #3220
2020-04-26 03:47:29 +00:00
this.methodProfiler.enter("tick");
try {
+ midTickLoadChunks(); // Paper
worldserver.timings.doTick.startTiming(); // Spigot
worldserver.doTick(booleansupplier);
worldserver.timings.doTick.stopTiming(); // Spigot
+ midTickLoadChunks(); // Paper
} catch (Throwable throwable) {
// Spigot Start
CrashReport crashreport;
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
Fix collision checks on spawning hanging entities and null on async chunk loads getCubes will now always load chunks getChunk with gen false will now not throw error Fixes #3368 Fixes #3364
2020-05-14 08:58:47 +00:00
index c1e3c5ad7bbadedf01f7bd9162602398b81005a2..a4a2882d32d0167738f8367209dbfd3ca4f5b953 100644
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
Add a config to turn off Optimized TickList #3145 Set: settings: - use-optimized-ticklist: false If you are having issues with block updates and want to see if this fixes it. Please report confirmations on #3145 ticket
2020-04-26 08:01:03 +00:00
@@ -432,6 +432,7 @@ public class WorldServer extends World {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
}
timings.scheduledBlocks.stopTiming(); // Spigot
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
gameprofilerfiller.exitEnter("raid");
this.timings.raids.startTiming(); // Paper - timings
this.persistentRaid.a();
Add a config to turn off Optimized TickList #3145 Set: settings: - use-optimized-ticklist: false If you are having issues with block updates and want to see if this fixes it. Please report confirmations on #3145 ticket
2020-04-26 08:01:03 +00:00
@@ -444,6 +445,7 @@ public class WorldServer extends World {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
timings.doSounds.startTiming(); // Spigot
this.ad();
timings.doSounds.stopTiming(); // Spigot
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
this.ticking = false;
gameprofilerfiller.exitEnter("entities");
boolean flag3 = true || !this.players.isEmpty() || !this.getForceLoadedChunks().isEmpty(); // CraftBukkit - this prevents entity cleanup, other issues on servers with no players
Add a config to turn off Optimized TickList #3145 Set: settings: - use-optimized-ticklist: false If you are having issues with block updates and want to see if this fixes it. Please report confirmations on #3145 ticket
2020-04-26 08:01:03 +00:00
@@ -529,6 +531,7 @@ public class WorldServer extends World {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
timings.entityTick.stopTiming(); // Spigot
this.tickingEntities = false;
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
try (co.aikar.timings.Timing ignored = this.timings.newEntities.startTiming()) { // Paper - timings
while ((entity = (Entity) this.entitiesToAdd.poll()) != null) {
Add a config to turn off Optimized TickList #3145 Set: settings: - use-optimized-ticklist: false If you are having issues with block updates and want to see if this fixes it. Please report confirmations on #3145 ticket
2020-04-26 08:01:03 +00:00
@@ -539,6 +542,7 @@ public class WorldServer extends World {
Speed up processing of chunk loads and generation Credit to Spotted for the idea A lot of the new chunk system requires constant back and forth the main thread to handle priority scheduling and ensuring conflicting tasks do not run at the same time. The issue is, these queues are only checked at either: A) Sync Chunk Loads B) End of Tick while sleeping This results in generating chunks sitting waiting for a full tick to complete before it will even start the next unit of work to do. Additionally, this also delays loading of chunks until this same timing. We will now periodically poll the chunk task queues throughout the tick, looking for work to do. We do this in a fair method that considers all worlds, not just the one being ticked, so that each world can get 1 task procesed each before the next pass. We also cap the throughput of these task processes to 1 per world per 0.1ms or 200 max per tick, to ensure that high volume of tasks do not overload the current tick time. In a view distance of 15, chunk loading performance was visually faster on the client. Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
2020-04-09 06:25:18 +00:00
gameprofilerfiller.exit();
timings.tickEntities.stopTiming(); // Spigot
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
this.tickBlockEntities();
}
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