More more more more more more more more more more more more more more more more more more work

patches/server/0435-Delay-Chunk-Unloads-based-on-Player-Movement.patch

@@ -0,0 +1,109 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sat, 18 Jun 2016 23:22:12 -0400
+Subject: [PATCH] Delay Chunk Unloads based on Player Movement
+
+When players are moving in the world, doing things such as building or exploring,
+they will commonly go back and forth in a small area. This causes a ton of chunk load
+and unload activity on the edge chunks of their view distance.
+
+A simple back and forth movement in 6 blocks could spam a chunk to thrash a
+loading and unload cycle over and over again.
+
+This is very wasteful. This system introduces a delay of inactivity on a chunk
+before it actually unloads, which will be handled by the ticket expiry process.
+
+This allows servers with smaller worlds who do less long distance exploring to stop
+wasting cpu cycles on saving/unloading/reloading chunks repeatedly.
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+index 7b3d3b3c6c73fb146c3be29aaaac77fee5824f91..845f105457d659a4bd88d4a8ce91b20d6abb7865 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
++++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+@@ -550,6 +550,15 @@ public class PaperWorldConfig {
+         lightQueueSize = getInt("light-queue-size", lightQueueSize);
+     }
+ 
++    public long delayChunkUnloadsBy;
++    private void delayChunkUnloadsBy() {
++        delayChunkUnloadsBy = PaperConfig.getSeconds(getString("delay-chunk-unloads-by", "10s"));
++        if (delayChunkUnloadsBy > 0) {
++            log("Delaying chunk unloads by " + delayChunkUnloadsBy + " seconds");
++            delayChunkUnloadsBy *= 20;
++        }
++    }
++
+     public boolean altItemDespawnRateEnabled;
+     public java.util.Map<org.bukkit.Material, Integer> altItemDespawnRateMap;
+     private void altItemDespawnRate() {
+diff --git a/src/main/java/net/minecraft/server/level/DistanceManager.java b/src/main/java/net/minecraft/server/level/DistanceManager.java
+index 95f195980e28bb59f43e5ca1d5e79ebe8c3ddaea..84dc1e94b4f7b8315d8422634dd49b1f85044d18 100644
+--- a/src/main/java/net/minecraft/server/level/DistanceManager.java
++++ b/src/main/java/net/minecraft/server/level/DistanceManager.java
+@@ -197,6 +197,27 @@ public abstract class DistanceManager {
+         boolean removed = false; // CraftBukkit
+         if (arraysetsorted.remove(ticket)) {
+             removed = true; // CraftBukkit
++            // Paper start - delay chunk unloads for player tickets
++            long delayChunkUnloadsBy = chunkMap.level.paperConfig.delayChunkUnloadsBy;
++            if (ticket.getType() == TicketType.PLAYER && delayChunkUnloadsBy > 0) {
++                boolean hasPlayer = false;
++                for (Ticket<?> ticket1 : arraysetsorted) {
++                    if (ticket1.getType() == TicketType.PLAYER) {
++                        hasPlayer = true;
++                        break;
++                    }
++                }
++                ChunkHolder playerChunk = chunkMap.getUpdatingChunkIfPresent(i);
++                if (!hasPlayer && playerChunk != null && playerChunk.isFullChunkReady()) {
++                    Ticket<Long> delayUnload = new Ticket<Long>(TicketType.DELAY_UNLOAD, 33, i);
++                    delayUnload.delayUnloadBy = delayChunkUnloadsBy;
++                    delayUnload.setCreatedTick(this.ticketTickCounter);
++                    arraysetsorted.remove(delayUnload);
++                    // refresh ticket
++                    arraysetsorted.add(delayUnload);
++                }
++            }
++            // Paper end
+         }
+ 
+         if (arraysetsorted.isEmpty()) {
+diff --git a/src/main/java/net/minecraft/server/level/Ticket.java b/src/main/java/net/minecraft/server/level/Ticket.java
+index ffc43e5d3d0563c9e9c171064511b2c65ddf67e1..f1128f0d4a9a0241ac6c9bc18dd13b431c616bb1 100644
+--- a/src/main/java/net/minecraft/server/level/Ticket.java
++++ b/src/main/java/net/minecraft/server/level/Ticket.java
+@@ -7,11 +7,13 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
+     private final int ticketLevel;
+     public final T key;
+     public long createdTick;
++    public long delayUnloadBy; // Paper
+ 
+     protected Ticket(TicketType<T> type, int level, T argument) {
+         this.type = type;
+         this.ticketLevel = level;
+         this.key = argument;
++        this.delayUnloadBy = type.timeout; // Paper
+     }
+ 
+     @Override
+@@ -60,7 +62,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
+     }
+ 
+     protected boolean timedOut(long currentTick) {
+-        long l = this.type.timeout();
++        long l = delayUnloadBy; // Paper
+         return l != 0L && currentTick - this.createdTick > l;
+     }
+ }
+diff --git a/src/main/java/net/minecraft/server/level/TicketType.java b/src/main/java/net/minecraft/server/level/TicketType.java
+index 78fbb4c3e52e900956ae0811aaf934c81ee5ea48..8770fe0db46b01e8b608637df4f1a669a3f4cdde 100644
+--- a/src/main/java/net/minecraft/server/level/TicketType.java
++++ b/src/main/java/net/minecraft/server/level/TicketType.java
+@@ -28,6 +28,7 @@ public class TicketType<T> {
+     public static final TicketType<ChunkPos> UNKNOWN = TicketType.create("unknown", Comparator.comparingLong(ChunkPos::toLong), 1);
+     public static final TicketType<Unit> PLUGIN = TicketType.create("plugin", (a, b) -> 0); // CraftBukkit
+     public static final TicketType<org.bukkit.plugin.Plugin> PLUGIN_TICKET = TicketType.create("plugin_ticket", (plugin1, plugin2) -> plugin1.getClass().getName().compareTo(plugin2.getClass().getName())); // CraftBukkit
++    public static final TicketType<Long> DELAY_UNLOAD = create("delay_unload", Long::compareTo, 300); // Paper
+ 
+     public static <T> TicketType<T> create(String name, Comparator<T> argumentComparator) {
+         return new TicketType<>(name, argumentComparator, 0L);

patches/server/0470-Implement-Chunk-Priority-Urgency-System-for-Chunks.patch

@@ -529,7 +529,7 @@ index 0bd55c5a43bfed7d5c80f6859b2827b7da3d0804..373ac9909666302fd6b9c6891866a9ba
      }
  
 diff --git a/src/main/java/net/minecraft/server/level/DistanceManager.java b/src/main/java/net/minecraft/server/level/DistanceManager.java
-index 95f195980e28bb59f43e5ca1d5e79ebe8c3ddaea..bf18dbe5dc137dc40f67aa9ae4cb35e7c8358f0d 100644
+index 84dc1e94b4f7b8315d8422634dd49b1f85044d18..451d5e9b5906e662a0c2e04b407068ea49d1089e 100644
 --- a/src/main/java/net/minecraft/server/level/DistanceManager.java
 +++ b/src/main/java/net/minecraft/server/level/DistanceManager.java
 @@ -113,6 +113,7 @@ public abstract class DistanceManager {
@@ -583,7 +583,7 @@ index 95f195980e28bb59f43e5ca1d5e79ebe8c3ddaea..bf18dbe5dc137dc40f67aa9ae4cb35e7
  
          boolean removed = false; // CraftBukkit
          if (arraysetsorted.remove(ticket)) {
-@@ -203,7 +211,12 @@ public abstract class DistanceManager {
+@@ -224,7 +232,12 @@ public abstract class DistanceManager {
              this.tickets.remove(i);
          }
  
@@ -597,7 +597,7 @@ index 95f195980e28bb59f43e5ca1d5e79ebe8c3ddaea..bf18dbe5dc137dc40f67aa9ae4cb35e7
          return removed; // CraftBukkit
      }
  
-@@ -251,6 +264,112 @@ public abstract class DistanceManager {
+@@ -272,6 +285,112 @@ public abstract class DistanceManager {
          });
      }
  
@@ -711,7 +711,7 @@ index 95f195980e28bb59f43e5ca1d5e79ebe8c3ddaea..bf18dbe5dc137dc40f67aa9ae4cb35e7
          Ticket<ChunkPos> ticket = new Ticket<>(TicketType.FORCED, 31, pos);
          long i = pos.toLong();
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 00305a06885b2457615b6bd35bb1a84721ca1d77..93b8c5c21a6a6c2475f4589014852a5178dfc13f 100644
+index c3875acfad91c50a7fec4b1f8e06e8a32e2ea037..ca3ccf2631587a896f6b909d63889708e6f72f27 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 @@ -601,6 +601,26 @@ public class ServerChunkCache extends ChunkSource {
@@ -1103,19 +1103,19 @@ index c0ef95f83f2d13025bedd4bcc7e177cee66b5470..fec2a2a9f958492eefbbffcaf8179a2f
  
      public void setTaskPerBatch(int taskBatchSize) {
 diff --git a/src/main/java/net/minecraft/server/level/Ticket.java b/src/main/java/net/minecraft/server/level/Ticket.java
-index ffc43e5d3d0563c9e9c171064511b2c65ddf67e1..85f41e94b555eba1c8f887ca130a7cdba7bdb056 100644
+index f1128f0d4a9a0241ac6c9bc18dd13b431c616bb1..2b2b7851d5f68bcdb41d58bcc64740ba58bf1ef4 100644
 --- a/src/main/java/net/minecraft/server/level/Ticket.java
 +++ b/src/main/java/net/minecraft/server/level/Ticket.java
-@@ -7,6 +7,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
-     private final int ticketLevel;
+@@ -8,6 +8,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
      public final T key;
      public long createdTick;
+     public long delayUnloadBy; // Paper
 +    public int priority; // Paper - Chunk priority
  
      protected Ticket(TicketType<T> type, int level, T argument) {
          this.type = type;
 diff --git a/src/main/java/net/minecraft/server/level/TicketType.java b/src/main/java/net/minecraft/server/level/TicketType.java
-index 78fbb4c3e52e900956ae0811aaf934c81ee5ea48..23d13600d6925f6746dfde08e17ba578e274010e 100644
+index 8770fe0db46b01e8b608637df4f1a669a3f4cdde..3c1698ba0d3bc412ab957777d9b5211dbc555208 100644
 --- a/src/main/java/net/minecraft/server/level/TicketType.java
 +++ b/src/main/java/net/minecraft/server/level/TicketType.java
 @@ -9,6 +9,8 @@ import net.minecraft.world.level.ChunkPos;

patches/server/0490-Improve-Chunk-Status-Transition-Speed.patch

@@ -0,0 +1,81 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Fri, 29 May 2020 23:32:14 -0400
+Subject: [PATCH] Improve Chunk Status Transition Speed
+
+When a chunk is loaded from disk that has already been generated,
+the server has to promote the chunk through the system to reach
+it's current desired status level.
+
+This results in every single status transition going from the main thread
+to the world gen threads, only to discover it has no work it actually
+needs to do.... and then it returns back to main.
+
+This back and forth costs a lot of time and can really delay chunk loads
+when the server is under high TPS due to their being a lot of time in
+between chunk load times, as well as hogs up the chunk threads from doing
+actual generation and light work.
+
+Additionally, the whole task system uses a lot of CPU on the server threads anyways.
+
+So by optimizing status transitions for status's that are already complete,
+we can run them to the desired level while on main thread (where it has
+to happen anyways) instead of ever jumping to world gen thread.
+
+This will improve chunk loading effeciency to be reduced down to the following
+scenario / path:
+
+1) MAIN: Chunk Requested, Load Request sent to ChunkTaskManager / IO Queue
+2) IO: Once position in queue comes, submit read IO data and schedule to chunk task thread
+3) CHUNK: Once IO is loaded and position in queue comes, deserialize the chunk data, process conversions, submit to main queue
+4) MAIN: next Chunk Task process (Mid Tick or End Of Tick), load chunk data into world (POI, main thread tasks)
+5) MAIN: process status transitions all the way to LIGHT, light schedules Threaded task
+6) SERVER: Light tasks register light enablement for chunk and any lighting needing to be done
+7) MAIN: Task returns to main, finish processing to FULL/TICKING status
+
+Previously would have hopped to SERVER around 12+ times there extra.
+
+diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
+index 64fa9affc32057f09268a6f92dbc88c9decd6ed8..6782e2b100b1619016c637a9e71f9e880ff974e1 100644
+--- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
++++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
+@@ -85,6 +85,13 @@ public class ChunkHolder {
+         this.playersInChunkTickRange = this.chunkMap.playerChunkTickRangeMap.getObjectsInRange(key);
+     }
+     // Paper end - optimise isOutsideOfRange
++    // Paper start - optimize chunk status progression without jumping through thread pool
++    public boolean canAdvanceStatus() {
++        ChunkStatus status = getChunkHolderStatus();
++        ChunkAccess chunk = getAvailableChunkNow();
++        return chunk != null && (status == null || chunk.getStatus().isOrAfter(getNextStatus(status)));
++    }
++    // Paper end
+ 
+     public ChunkHolder(ChunkPos pos, int level, LevelHeightAccessor world, LevelLightEngine lightingProvider, ChunkHolder.LevelChangeListener levelUpdateListener, ChunkHolder.PlayerProvider playersWatchingChunkProvider) {
+         this.futures = new AtomicReferenceArray(ChunkHolder.CHUNK_STATUSES.size());
+diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
+index 373ac9909666302fd6b9c6891866a9baf3977316..c637a9b0a978700a0cd941be22208ae3c01f6eb2 100644
+--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
++++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
+@@ -662,7 +662,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+             return either.mapLeft((list) -> {
+                 return (LevelChunk) list.get(list.size() / 2);
+             });
+-        }, this.mainThreadExecutor);
++        }, this.mainInvokingExecutor); // Paper
+     }
+ 
+     @Nullable
+@@ -1013,6 +1013,12 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
+             return "chunkGenerate " + requiredStatus.getName();
+         });
+         Executor executor = (runnable) -> {
++            // Paper start - optimize chunk status progression without jumping through thread pool
++            if (holder.canAdvanceStatus()) {
++                this.mainInvokingExecutor.execute(runnable);
++                return;
++            }
++            // Paper end
+             this.worldgenMailbox.tell(ChunkTaskPriorityQueueSorter.message(holder, runnable));
+         };
+ 

patches/server/0493-Add-zombie-targets-turtle-egg-config.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Add zombie targets turtle egg config
 
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
-index 7b3d3b3c6c73fb146c3be29aaaac77fee5824f91..563cad1d7a4943648fe1f7e9b57fa7fe485e4a72 100644
+index 845f105457d659a4bd88d4a8ce91b20d6abb7865..0521d5f9eba13ade77b578dd4eb5addd267dd4b9 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -56,6 +56,11 @@ public class PaperWorldConfig {

patches/server/0495-Optimize-redstone-algorithm.patch

@@ -19,7 +19,7 @@ Aside from making the obvious class/function renames and obfhelpers I didn't nee
 Just added Bukkit's event system and took a few liberties with dead code and comment misspellings.
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
-index 563cad1d7a4943648fe1f7e9b57fa7fe485e4a72..0535b24f5c9ff192ec2a6f5a1734f144251d9876 100644
+index 0521d5f9eba13ade77b578dd4eb5addd267dd4b9..bc93318246eab1da5462aa3fa0cde4c100622f4e 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -61,6 +61,16 @@ public class PaperWorldConfig {

patches/server/0500-Incremental-player-saving.patch

@@ -0,0 +1,126 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sun, 9 Aug 2020 08:59:25 +0300
+Subject: [PATCH] Incremental player saving
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
+index 9a66cddbf9863aa6ff566a337153883c07c08e41..b6c7aec1516a4db4fde8c9ec2772cd982ed5e304 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
++++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
+@@ -468,4 +468,15 @@ public class PaperConfig {
+         config.set("settings.unsupported-settings.allow-headless-pistons-readme", "This setting controls if players should be able to create headless pistons.");
+         allowHeadlessPistons = getBoolean("settings.unsupported-settings.allow-headless-pistons", false);
+     }
++
++    public static int playerAutoSaveRate = -1;
++    public static int maxPlayerAutoSavePerTick = 10;
++    private static void playerAutoSaveRate() {
++        playerAutoSaveRate = getInt("settings.player-auto-save-rate", -1);
++        maxPlayerAutoSavePerTick = getInt("settings.max-player-auto-save-per-tick", -1);
++        if (maxPlayerAutoSavePerTick == -1) { // -1 Automatic / "Recommended"
++            // 10 should be safe for everyone unless you mass spamming player auto save
++            maxPlayerAutoSavePerTick = (playerAutoSaveRate == -1 || playerAutoSaveRate > 100) ? 10 : 20;
++        }
++    }
+ }
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index 4351dd9c293d1db48c87c5df28bcb2b9a59583f7..7f733bd666e42f8ba80bfda233f662564bfc0e24 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -896,12 +896,17 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+         return flag3;
+     }
+ 
++    // Paper start
+     public boolean saveEverything(boolean suppressLogs, boolean flush, boolean force) {
++        return saveEverything(suppressLogs, flush, force, -1);
++    }
++    public boolean saveEverything(boolean suppressLogs, boolean flush, boolean force, int playerSaveInterval) {
++        // Paper end
+         boolean flag3;
+ 
+         try {
+             this.isSaving = true;
+-            this.getPlayerList().saveAll();
++            this.getPlayerList().saveAll(playerSaveInterval); // Paper
+             flag3 = this.saveAllChunks(suppressLogs, flush, force);
+         } finally {
+             this.isSaving = false;
+@@ -963,7 +968,6 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+         this.isSaving = true;
+         if (this.playerList != null) {
+             MinecraftServer.LOGGER.info("Saving players");
+-            this.playerList.saveAll();
+             this.playerList.removeAll(this.isRestarting); // Paper
+             try { Thread.sleep(100); } catch (InterruptedException ex) {} // CraftBukkit - SPIGOT-625 - give server at least a chance to send packets
+         }
+@@ -1408,13 +1412,19 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+             }
+         }
+ 
++        // Paper start
++        int playerSaveInterval = com.destroystokyo.paper.PaperConfig.playerAutoSaveRate;
++        if (playerSaveInterval < 0) {
++            playerSaveInterval = autosavePeriod;
++        }
++        // Paper end
+         if (this.autosavePeriod > 0 && this.tickCount % this.autosavePeriod == 0) { // CraftBukkit
+             MinecraftServer.LOGGER.debug("Autosave started");
+             this.profiler.push("save");
+-            this.saveEverything(true, false, false);
++            this.saveEverything(true, false, false, playerSaveInterval); // Paper
+             this.profiler.pop();
+             MinecraftServer.LOGGER.debug("Autosave finished");
+-        }
++        } else this.getPlayerList().saveAll(playerSaveInterval); // Paper
+         io.papermc.paper.util.CachedLists.reset(); // Paper
+         // Paper start - move executeAll() into full server tick timing
+         try (co.aikar.timings.Timing ignored = MinecraftTimings.processTasksTimer.startTiming()) {
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index 84f78e2b3bf51eae1d486852464df032861c5a0b..968b8180f92066a43f06bff8dd1d49b03bd08f5b 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -171,6 +171,7 @@ public class ServerPlayer extends Player {
+     public final int getViewDistance() { return this.getLevel().getChunkSource().chunkMap.viewDistance - 1; } // Paper - placeholder
+ 
+     private static final Logger LOGGER = LogManager.getLogger();
++    public long lastSave = MinecraftServer.currentTick; // Paper
+     private static final int NEUTRAL_MOB_DEATH_NOTIFICATION_RADII_XZ = 32;
+     private static final int NEUTRAL_MOB_DEATH_NOTIFICATION_RADII_Y = 10;
+     public ServerGamePacketListenerImpl connection;
+diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
+index 310bed27c04ef812aa8607c9dca789db13341d25..b1f93551ce3e4d12e5cbe424c1ceaf3da20d0ffd 100644
+--- a/src/main/java/net/minecraft/server/players/PlayerList.java
++++ b/src/main/java/net/minecraft/server/players/PlayerList.java
+@@ -569,6 +569,7 @@ public abstract class PlayerList {
+     protected void save(ServerPlayer player) {
+         if (!player.getBukkitEntity().isPersistent()) return; // CraftBukkit
+         if (!player.didPlayerJoinEvent) return; // Paper - If we never fired PJE, we disconnected during login. Data has not changed, and additionally, our saved vehicle is not loaded! If we save now, we will lose our vehicle (CraftBukkit bug)
++        player.lastSave = MinecraftServer.currentTick; // Paper
+         this.playerIo.save(player);
+         ServerStatsCounter serverstatisticmanager = (ServerStatsCounter) player.getStats(); // CraftBukkit
+ 
+@@ -1181,10 +1182,21 @@ public abstract class PlayerList {
+     }
+ 
+     public void saveAll() {
++        // Paper start - incremental player saving
++        saveAll(-1);
++    }
++    public void saveAll(int interval) {
+         net.minecraft.server.MCUtil.ensureMain("Save Players" , () -> { // Paper - Ensure main
+         MinecraftTimings.savePlayers.startTiming(); // Paper
++        int numSaved = 0;
++        long now = MinecraftServer.currentTick;
+         for (int i = 0; i < this.players.size(); ++i) {
+-            this.save(this.players.get(i));
++            ServerPlayer entityplayer = this.players.get(i);
++            if (interval != -1 || now - entityplayer.lastSave >= interval) {
++                this.save(entityplayer);
++                if (interval != -1 && ++numSaved <= com.destroystokyo.paper.PaperConfig.maxPlayerAutoSavePerTick) { break; }
++            }
++            // Paper end
+         }
+         MinecraftTimings.savePlayers.stopTiming(); // Paper
+         return null; }); // Paper - ensure main

patches/server/0503-Cache-block-data-strings.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Cache block data strings
 
 
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index 4351dd9c293d1db48c87c5df28bcb2b9a59583f7..fe8b825adfa3f7ed5c85e238ef93e46908ca88ae 100644
+index 7f733bd666e42f8ba80bfda233f662564bfc0e24..4d90ebf13e8ad2dd77175fcdc15a0e84a58ff081 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
-@@ -1963,6 +1963,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -1973,6 +1973,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
              this.getPlayerList().reloadResources();
              this.functionManager.replaceLibrary(this.resources.getFunctionLibrary());
              this.structureManager.onResourceManagerReload(this.resources.getResourceManager());

patches/server/0508-Don-t-mark-dirty-in-invalid-locations-SPIGOT-6086.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Don't mark dirty in invalid locations (SPIGOT-6086)
 
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkHolder.java b/src/main/java/net/minecraft/server/level/ChunkHolder.java
-index 64fa9affc32057f09268a6f92dbc88c9decd6ed8..04fe3432216c9a1e4d3dbfa159faf2332de422fb 100644
+index 6782e2b100b1619016c637a9e71f9e880ff974e1..41333234cdda8127a239f591d8d2cd304e341852 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkHolder.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkHolder.java
-@@ -220,6 +220,7 @@ public class ChunkHolder {
+@@ -227,6 +227,7 @@ public class ChunkHolder {
      }
  
      public void blockChanged(BlockPos pos) {

patches/server/0510-Lazily-track-plugin-scoreboards-by-default.patch

@@ -14,7 +14,7 @@ this breaks your workflow you can always force all scoreboards to be tracked wit
 settings.track-plugin-scoreboards in paper.yml.
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
-index 9a66cddbf9863aa6ff566a337153883c07c08e41..c0c807522aaa82ca74c47849b47e6b6b48b9a6f8 100644
+index b6c7aec1516a4db4fde8c9ec2772cd982ed5e304..dbfd840f2f64fa7eec5523aa2ba9e1018f4bb19d 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
 @@ -96,6 +96,11 @@ public class PaperConfig {

patches/server/0512-Fix-deop-kicking-non-whitelisted-player-when-white-l.patch

@@ -6,10 +6,10 @@ Subject: [PATCH] Fix deop kicking non-whitelisted player when white list is
 
 
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index fe8b825adfa3f7ed5c85e238ef93e46908ca88ae..d12c154f6110854c8ca9268edadab14b97c46d51 100644
+index 4d90ebf13e8ad2dd77175fcdc15a0e84a58ff081..d8c1bb347608eaea3741525602613bebd5f54c6b 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
-@@ -2029,13 +2029,14 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+@@ -2039,13 +2039,14 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
          if (this.isEnforceWhitelist()) {
              PlayerList playerlist = source.getServer().getPlayerList();
              UserWhiteList whitelist = playerlist.getWhiteList();

patches/server/0527-Toggle-for-removing-existing-dragon.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Toggle for removing existing dragon
 
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
-index 0535b24f5c9ff192ec2a6f5a1734f144251d9876..d99ddd769b381b2f9a59352971c6faeee7b6387e 100644
+index bc93318246eab1da5462aa3fa0cde4c100622f4e..62e60057a362ad7c3e96b3167f78ba154cfefdc3 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -71,6 +71,14 @@ public class PaperWorldConfig {

patches/server/0532-Add-API-for-quit-reason.patch

@@ -25,10 +25,10 @@ index d30bc3f1da336b421d9a42070184e07169dd14e4..a6eadf71957b37e2acc5d09f0ce4ee96
                          Connection.LOGGER.debug("Failed to sent packet", throwable);
                          ConnectionProtocol enumprotocol = this.getCurrentProtocol();
 diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
-index 84f78e2b3bf51eae1d486852464df032861c5a0b..a32551253f12bd6f4a9008dd5d99fece6464effe 100644
+index 968b8180f92066a43f06bff8dd1d49b03bd08f5b..257942084d988cac5f87ff998ea637fa263a3fe9 100644
 --- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
 +++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
-@@ -256,6 +256,7 @@ public class ServerPlayer extends Player {
+@@ -257,6 +257,7 @@ public class ServerPlayer extends Player {
  
      public double lastEntitySpawnRadiusSquared; // Paper - optimise isOutsideRange, this field is in blocks
      public final com.destroystokyo.paper.util.misc.PooledLinkedHashSets.PooledObjectLinkedOpenHashSet<ServerPlayer> cachedSingleHashSet; // Paper
@@ -49,10 +49,10 @@ index 2dd47eab63cf9322a5844e748709e220272a8cfe..c0a685cfe62aeda3583763ecc1e4fa12
              this.connection.disconnect(ichatbasecomponent);
          });
 diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
-index 310bed27c04ef812aa8607c9dca789db13341d25..6aaa5174bb0eff3216667b4c8d3912d02e1c66e2 100644
+index b1f93551ce3e4d12e5cbe424c1ceaf3da20d0ffd..5bbf5c83a5052df07392cd17236469b2d3ddecdc 100644
 --- a/src/main/java/net/minecraft/server/players/PlayerList.java
 +++ b/src/main/java/net/minecraft/server/players/PlayerList.java
-@@ -595,7 +595,7 @@ public abstract class PlayerList {
+@@ -596,7 +596,7 @@ public abstract class PlayerList {
              entityplayer.closeContainer(org.bukkit.event.inventory.InventoryCloseEvent.Reason.DISCONNECT); // Paper
          }
  

patches/server/0533-Add-Wandering-Trader-spawn-rate-config-options.patch

@@ -11,7 +11,7 @@ in IWorldServerData are removed as they were only used in certain places, with h
 values used in other places.
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
-index d99ddd769b381b2f9a59352971c6faeee7b6387e..5c22b8993385c1e6c72fe1fbd5f14c76253eec74 100644
+index 62e60057a362ad7c3e96b3167f78ba154cfefdc3..ab6ade77a7be2b0d67effcacbf74ed64a1beccff 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -79,6 +79,19 @@ public class PaperWorldConfig {