165 lines
6.5 KiB
Diff
165 lines
6.5 KiB
Diff
From 338b4ea12bc2426248489fe26a9b2c7bac6feb30 Mon Sep 17 00:00:00 2001
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From: md_5 <git@md-5.net>
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Date: Sat, 25 Jan 2014 14:08:35 +1100
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Subject: [PATCH] Highly Optimized Tick Loop
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index b7ba79a..c55dcae 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -116,6 +116,12 @@ public abstract class MinecraftServer implements Runnable, ICommandListener, IAs
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public java.util.Queue<Runnable> processQueue = new java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
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public int autosavePeriod;
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// CraftBukkit end
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+ // Spigot start
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+ private static final int TPS = 20;
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+ private static final int TICK_TIME = 1000000000 / TPS;
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+ private static final int SAMPLE_INTERVAL = 100;
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+ public final double[] recentTps = new double[ 3 ];
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+ // Spigot end
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public MinecraftServer(OptionSet options, Proxy proxy, File file1) {
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this.e = proxy;
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@@ -500,6 +506,13 @@ public abstract class MinecraftServer implements Runnable, ICommandListener, IAs
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this.isRunning = false;
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}
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+ // Spigot Start
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+ private static double calcTps(double avg, double exp, double tps)
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+ {
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+ return ( avg * exp ) + ( tps * ( 1 - exp ) );
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+ }
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+ // Spigot End
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+
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public void run() {
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try {
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if (this.init()) {
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@@ -510,38 +523,34 @@ public abstract class MinecraftServer implements Runnable, ICommandListener, IAs
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this.r.setServerInfo(new ServerPing.ServerData("1.8.8", 47));
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this.a(this.r);
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+ // Spigot start
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+ Arrays.fill( recentTps, 20 );
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+ long lastTick = System.nanoTime(), catchupTime = 0, curTime, wait, tickSection = lastTick;
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while (this.isRunning) {
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- long j = az();
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- long k = j - this.ab;
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-
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- if (k > 2000L && this.ab - this.R >= 15000L) {
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- if (server.getWarnOnOverload()) // CraftBukkit
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- MinecraftServer.LOGGER.warn("Can\'t keep up! Did the system time change, or is the server overloaded? Running {}ms behind, skipping {} tick(s)", new Object[] { Long.valueOf(k), Long.valueOf(k / 50L)});
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- k = 2000L;
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- this.R = this.ab;
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- }
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-
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- if (k < 0L) {
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- MinecraftServer.LOGGER.warn("Time ran backwards! Did the system time change?");
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- k = 0L;
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+ curTime = System.nanoTime();
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+ wait = TICK_TIME - (curTime - lastTick) - catchupTime;
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+ if (wait > 0) {
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+ Thread.sleep(wait / 1000000);
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+ catchupTime = 0;
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+ continue;
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+ } else {
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+ catchupTime = Math.min(1000000000, Math.abs(wait));
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}
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- i += k;
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- this.ab = j;
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- if (this.worlds.get(0).everyoneDeeplySleeping()) { // CraftBukkit
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- this.A();
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- i = 0L;
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- } else {
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- while (i > 50L) {
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- MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit
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- i -= 50L;
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- this.A();
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- }
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+ if ( MinecraftServer.currentTick++ % SAMPLE_INTERVAL == 0 )
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+ {
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+ double currentTps = 1E9 / ( curTime - tickSection ) * SAMPLE_INTERVAL;
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+ recentTps[0] = calcTps( recentTps[0], 0.92, currentTps ); // 1/exp(5sec/1min)
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+ recentTps[1] = calcTps( recentTps[1], 0.9835, currentTps ); // 1/exp(5sec/5min)
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+ recentTps[2] = calcTps( recentTps[2], 0.9945, currentTps ); // 1/exp(5sec/15min)
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+ tickSection = curTime;
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}
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+ lastTick = curTime;
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- Thread.sleep(Math.max(1L, 50L - i));
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+ this.A();
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this.Q = true;
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}
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+ // Spigot end
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} else {
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this.a((CrashReport) null);
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}
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diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
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index a2be9df..e1cc2e0 100644
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--- a/src/main/java/org/spigotmc/SpigotConfig.java
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+++ b/src/main/java/org/spigotmc/SpigotConfig.java
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@@ -262,4 +262,9 @@ public class SpigotConfig
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"screen." );
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}
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}
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+
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+ private static void tpsCommand()
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+ {
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+ commands.put( "tps", new TicksPerSecondCommand( "tps" ) );
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+ }
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}
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diff --git a/src/main/java/org/spigotmc/TicksPerSecondCommand.java b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
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new file mode 100644
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index 0000000..be2e31d
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--- /dev/null
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+++ b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
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@@ -0,0 +1,45 @@
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+package org.spigotmc;
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+
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+import com.google.common.base.Joiner;
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+import net.minecraft.server.MinecraftServer;
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+import com.google.common.collect.Iterables;
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+import org.bukkit.ChatColor;
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+import org.bukkit.command.Command;
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+import org.bukkit.command.CommandSender;
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+
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+public class TicksPerSecondCommand extends Command
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+{
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+
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+ public TicksPerSecondCommand(String name)
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+ {
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+ super( name );
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+ this.description = "Gets the current ticks per second for the server";
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+ this.usageMessage = "/tps";
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+ this.setPermission( "bukkit.command.tps" );
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+ }
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+
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+ @Override
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+ public boolean execute(CommandSender sender, String currentAlias, String[] args)
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+ {
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+ if ( !testPermission( sender ) )
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+ {
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+ return true;
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+ }
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+
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+ StringBuilder sb = new StringBuilder( ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " );
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+ for ( double tps : MinecraftServer.getServer().recentTps )
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+ {
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+ sb.append( format( tps ) );
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+ sb.append( ", " );
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+ }
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+ sender.sendMessage( sb.substring( 0, sb.length() - 2 ) );
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+
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+ return true;
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+ }
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+
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+ private String format(double tps)
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+ {
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+ return ( ( tps > 18.0 ) ? ChatColor.GREEN : ( tps > 16.0 ) ? ChatColor.YELLOW : ChatColor.RED ).toString()
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+ + ( ( tps > 20.0 ) ? "*" : "" ) + Math.min( Math.round( tps * 100.0 ) / 100.0, 20.0 );
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+ }
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+}
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--
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2.1.4
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