Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-16 11:30:06 +01:00
215 Zeilen
9.4 KiB
Diff
215 Zeilen
9.4 KiB
Diff
From edc5e3daa46c310bda6adb8233ae47b95e82f790 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Tue, 1 Mar 2016 23:09:29 -0600
|
|
Subject: [PATCH] Further improve server tick loop
|
|
|
|
Improves how the catchup buffer is handled, allowing it to roll both ways
|
|
increasing the effeciency of the thread sleep so it only will sleep once.
|
|
|
|
Also increases the buffer of the catchup to ensure server stays at 20 TPS unless extreme conditions
|
|
|
|
Previous implementation did not calculate TPS correctly.
|
|
Switch to a realistic rolling average and factor in std deviation as an extra reporting variable
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
index 42abdfe12..f4d0e2678 100644
|
|
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
@@ -114,16 +114,12 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
|
|
public org.bukkit.command.ConsoleCommandSender console;
|
|
public org.bukkit.command.RemoteConsoleCommandSender remoteConsole;
|
|
public ConsoleReader reader;
|
|
- public static int currentTick = (int) (System.currentTimeMillis() / 50);
|
|
+ public static int currentTick = 0; // Paper - Further improve tick loop
|
|
public final Thread primaryThread;
|
|
public java.util.Queue<Runnable> processQueue = new java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
|
|
public int autosavePeriod;
|
|
// CraftBukkit end
|
|
// Spigot start
|
|
- public static final int TPS = 20;
|
|
- public static final int TICK_TIME = 1000000000 / TPS;
|
|
- private static final int SAMPLE_INTERVAL = 100;
|
|
- public final double[] recentTps = new double[ 3 ];
|
|
public final SlackActivityAccountant slackActivityAccountant = new SlackActivityAccountant();
|
|
// Spigot end
|
|
|
|
@@ -534,12 +530,54 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
|
|
this.isRunning = false;
|
|
}
|
|
|
|
- // Spigot Start
|
|
- private static double calcTps(double avg, double exp, double tps)
|
|
- {
|
|
- return ( avg * exp ) + ( tps * ( 1 - exp ) );
|
|
+ // Paper start - Further improve server tick loop
|
|
+ private static final int TPS = 20;
|
|
+ private static final long SEC_IN_NANO = 1000000000;
|
|
+ public static final long TICK_TIME = SEC_IN_NANO / TPS;
|
|
+ private static final long MAX_CATCHUP_BUFFER = TICK_TIME * TPS * 60L;
|
|
+ private static final int SAMPLE_INTERVAL = 20;
|
|
+ public final RollingAverage tps1 = new RollingAverage(60);
|
|
+ public final RollingAverage tps5 = new RollingAverage(60 * 5);
|
|
+ public final RollingAverage tps15 = new RollingAverage(60 * 15);
|
|
+ public double[] recentTps = new double[3]; // Paper - Fine have your darn compat with bad plugins
|
|
+
|
|
+ public static class RollingAverage {
|
|
+ private final int size;
|
|
+ private long time;
|
|
+ private double total;
|
|
+ private int index = 0;
|
|
+ private final double[] samples;
|
|
+ private final long[] times;
|
|
+
|
|
+ RollingAverage(int size) {
|
|
+ this.size = size;
|
|
+ this.time = size * SEC_IN_NANO;
|
|
+ this.total = TPS * SEC_IN_NANO * size;
|
|
+ this.samples = new double[size];
|
|
+ this.times = new long[size];
|
|
+ for (int i = 0; i < size; i++) {
|
|
+ this.samples[i] = TPS;
|
|
+ this.times[i] = SEC_IN_NANO;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ public void add(double x, long t) {
|
|
+ time -= times[index];
|
|
+ total -= samples[index] * times[index];
|
|
+ samples[index] = x;
|
|
+ times[index] = t;
|
|
+ time += t;
|
|
+ total += x * t;
|
|
+ if (++index == size) {
|
|
+ index = 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ public double getAverage() {
|
|
+ return total / time;
|
|
+ }
|
|
}
|
|
- // Spigot End
|
|
+ // Paper End
|
|
|
|
public void run() {
|
|
try {
|
|
@@ -553,24 +591,41 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
|
|
|
|
// Spigot start
|
|
Arrays.fill( recentTps, 20 );
|
|
- long lastTick = System.nanoTime(), catchupTime = 0, curTime, wait, tickSection = lastTick;
|
|
+ long start = System.nanoTime(), lastTick = start - TICK_TIME, catchupTime = 0, curTime, wait, tickSection = start; // Paper - Further improve server tick loop
|
|
while (this.isRunning) {
|
|
curTime = System.nanoTime();
|
|
- wait = TICK_TIME - (curTime - lastTick) - catchupTime;
|
|
+ // Paper start - Further improve server tick loop
|
|
+ wait = TICK_TIME - (curTime - lastTick);
|
|
+ if (wait > 0) {
|
|
+ if (catchupTime < 2E6) {
|
|
+ wait += Math.abs(catchupTime);
|
|
+ } else if (wait < catchupTime) {
|
|
+ catchupTime -= wait;
|
|
+ wait = 0;
|
|
+ } else {
|
|
+ wait -= catchupTime;
|
|
+ catchupTime = 0;
|
|
+ }
|
|
+ }
|
|
if (wait > 0) {
|
|
Thread.sleep(wait / 1000000);
|
|
- catchupTime = 0;
|
|
- continue;
|
|
- } else {
|
|
- catchupTime = Math.min(1000000000, Math.abs(wait));
|
|
+ curTime = System.nanoTime();
|
|
+ wait = TICK_TIME - (curTime - lastTick);
|
|
}
|
|
|
|
- if ( MinecraftServer.currentTick++ % SAMPLE_INTERVAL == 0 )
|
|
+ catchupTime = Math.min(MAX_CATCHUP_BUFFER, catchupTime - wait);
|
|
+ if ( ++MinecraftServer.currentTick % SAMPLE_INTERVAL == 0 )
|
|
{
|
|
- double currentTps = 1E9 / ( curTime - tickSection ) * SAMPLE_INTERVAL;
|
|
- recentTps[0] = calcTps( recentTps[0], 0.92, currentTps ); // 1/exp(5sec/1min)
|
|
- recentTps[1] = calcTps( recentTps[1], 0.9835, currentTps ); // 1/exp(5sec/5min)
|
|
- recentTps[2] = calcTps( recentTps[2], 0.9945, currentTps ); // 1/exp(5sec/15min)
|
|
+ final long diff = curTime - tickSection;
|
|
+ double currentTps = 1E9 / diff * SAMPLE_INTERVAL;
|
|
+ tps1.add(currentTps, diff);
|
|
+ tps5.add(currentTps, diff);
|
|
+ tps15.add(currentTps, diff);
|
|
+ // Backwards compat with bad plugins
|
|
+ recentTps[0] = tps1.getAverage();
|
|
+ recentTps[1] = tps5.getAverage();
|
|
+ recentTps[2] = tps15.getAverage();
|
|
+ // Paper end
|
|
tickSection = curTime;
|
|
}
|
|
lastTick = curTime;
|
|
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
|
|
index a4444212a..296431312 100644
|
|
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
|
|
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
|
|
@@ -1752,6 +1752,17 @@ public final class CraftServer implements Server {
|
|
return CraftMagicNumbers.INSTANCE;
|
|
}
|
|
|
|
+ // Paper - Add getTPS API - Further improve tick loop
|
|
+ @Override
|
|
+ public double[] getTPS() {
|
|
+ return new double[] {
|
|
+ MinecraftServer.getServer().tps1.getAverage(),
|
|
+ MinecraftServer.getServer().tps5.getAverage(),
|
|
+ MinecraftServer.getServer().tps15.getAverage()
|
|
+ };
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
private final Spigot spigot = new Spigot()
|
|
{
|
|
|
|
diff --git a/src/main/java/org/spigotmc/TicksPerSecondCommand.java b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
|
|
index be2e31dea..6d21c3269 100644
|
|
--- a/src/main/java/org/spigotmc/TicksPerSecondCommand.java
|
|
+++ b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
|
|
@@ -1,8 +1,5 @@
|
|
package org.spigotmc;
|
|
|
|
-import com.google.common.base.Joiner;
|
|
-import net.minecraft.server.MinecraftServer;
|
|
-import com.google.common.collect.Iterables;
|
|
import org.bukkit.ChatColor;
|
|
import org.bukkit.command.Command;
|
|
import org.bukkit.command.CommandSender;
|
|
@@ -26,18 +23,20 @@ public class TicksPerSecondCommand extends Command
|
|
return true;
|
|
}
|
|
|
|
- StringBuilder sb = new StringBuilder( ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " );
|
|
- for ( double tps : MinecraftServer.getServer().recentTps )
|
|
- {
|
|
- sb.append( format( tps ) );
|
|
- sb.append( ", " );
|
|
+ // Paper start - Further improve tick handling
|
|
+ double[] tps = org.bukkit.Bukkit.getTPS();
|
|
+ String[] tpsAvg = new String[tps.length];
|
|
+
|
|
+ for ( int i = 0; i < tps.length; i++) {
|
|
+ tpsAvg[i] = format( tps[i] );
|
|
}
|
|
- sender.sendMessage( sb.substring( 0, sb.length() - 2 ) );
|
|
+ sender.sendMessage( ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " + org.apache.commons.lang.StringUtils.join(tpsAvg, ", "));
|
|
+ // Paper end
|
|
|
|
return true;
|
|
}
|
|
|
|
- private String format(double tps)
|
|
+ private static String format(double tps) // Paper - Made static
|
|
{
|
|
return ( ( tps > 18.0 ) ? ChatColor.GREEN : ( tps > 16.0 ) ? ChatColor.YELLOW : ChatColor.RED ).toString()
|
|
+ ( ( tps > 20.0 ) ? "*" : "" ) + Math.min( Math.round( tps * 100.0 ) / 100.0, 20.0 );
|
|
--
|
|
2.13.0
|
|
|