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Upstream has released updates that appears to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Warning: this commit contains more mapping changes from upstream, As always, ensure that you have working backups and test this build before deployment; Developers working on paper will, yet again, need to delete their work/Minecraft/1.13.2 folder Bukkit Changes: 7fca5fd4 SPIGOT-4558: Preserve user order in the face of copied defaults in configurations 15c9b1eb Ignore spurious slot IDs sent by client, e.g. in enchanting tables 5d2a10c5 SPIGOT-3747: Add API for force loaded chunks d6dd2bb3 SPIGOT-3538: Add getHitBlockFace for ProjectileHitEvent 771db4aa SPIGOT-794: Call EntityPlaceEvent for Minecart placement 55462509 Add InventoryView#getSlotType 2f3ce5b6 Remove EntityTransformEvent and CustomItemTagContainer from draft API f04ad7b6 Make ProjectileLaunchEvent extend EntitySpawnEvent ccb85808 Define EntitySpawnEvent b8cc3ebe Add PlayerItemDamageEvent 184a495d Ease ClassLoader Deadlocks Where Possible 11ac4728 Expand Boolean Prompt Values in Conversation API aae62d51 Added getAllSessionData() to the Conversation API. 9290ff91 Add InventoryView#getInventory API 995e530f Add API to get / set base arrow damage CraftBukkit Changes:c4a67eed
SPIGOT-4556: Fix plugins closing inventory during drop events5be2ddcb
Replace version constants with methods to prevent compiler inlininga5b9c7b3
Use API method to create offset command completions2bc7d1df
SPIGOT-3747: Add API for force loaded chunksa408f375
SPIGOT-3538: Add getHitBlockFace for ProjectileHitEventb54b9409
SPIGOT-2864: Make Arrow / Item setTicksLived behave like FallingBlock79ded7a8
SPIGOT-1811: Death message not shown on respawn screenb4a4f15d
SPIGOT-943: InventoryCloseEvent called on death regardless of open inventory0afed592
SPIGOT-794: Call EntityPlaceEvent for Minecart placement2b2d084a
Add InventoryView#getSlotType01a9959a
Do not use deprecated ItemSpawnEvent constructor9642498d
SPIGOT-4547: Call EntitySpawnEvent as general spawn fallback event963f4a5f
Add PlayerItemDamageEvent63db0445
Add API to get / set base arrow damage531c25d7
Add CraftMagicNumbers.MAPPINGS_VERSION for use by NMS pluginsd05c8b14
Mappings Updatebd36e200
SPIGOT-4551: Ignore invalid attribute modifier slots Spigot Changes: 518206a1 Remove redundant trove depend 1959ad21 MC-11211,SPIGOT-4552: Fix placing double slabs at y = 255 29ab5e43 SPIGOT-3661: Allow arguments in restart-script 7cc46316 SPIGOT-852: Growth modifiers for beetroots, potatoes, carrots 82e117e1 Squelch "fatal: Resolve operation not in progress" message 0a1a68e7 Mappings Update & Patch Rebuild
229 lines
10 KiB
Diff
229 lines
10 KiB
Diff
From e990ffd965e20df1b41e07f7861db7bf2584fb8c Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 1 Mar 2016 23:09:29 -0600
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Subject: [PATCH] Further improve server tick loop
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Improves how the catchup buffer is handled, allowing it to roll both ways
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increasing the effeciency of the thread sleep so it only will sleep once.
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Also increases the buffer of the catchup to ensure server stays at 20 TPS unless extreme conditions
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Previous implementation did not calculate TPS correctly.
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Switch to a realistic rolling average and factor in std deviation as an extra reporting variable
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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 b5f30b2b2..b12d9fbe8 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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@@ -141,7 +141,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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public org.bukkit.command.ConsoleCommandSender console;
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public org.bukkit.command.RemoteConsoleCommandSender remoteConsole;
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public ConsoleReader reader;
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- public static int currentTick = (int) (System.currentTimeMillis() / 50);
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+ public static int currentTick = 0; // Paper - Further improve tick loop
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public final Thread primaryThread;
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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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@@ -151,7 +151,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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// Spigot start
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public static final int TPS = 20;
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public static final int TICK_TIME = 1000000000 / TPS;
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- private static final int SAMPLE_INTERVAL = 100;
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+ private static final int SAMPLE_INTERVAL = 20; // Paper
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public final double[] recentTps = new double[ 3 ];
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public final SlackActivityAccountant slackActivityAccountant = new SlackActivityAccountant();
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// Spigot end
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@@ -684,7 +684,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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}
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private boolean canSleepForTick() {
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- return SystemUtils.getMonotonicMillis() < this.nextTick;
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+ return System.nanoTime() - lastTick + catchupTime < TICK_TIME; // Paper - improved "are we lagging" check to match our own
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}
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// Spigot Start
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@@ -692,6 +692,57 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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{
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return ( avg * exp ) + ( tps * ( 1 - exp ) );
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}
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+
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+ // Paper start - Further improve server tick loop
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+ private static final long SEC_IN_NANO = 1000000000;
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+ private static final long MAX_CATCHUP_BUFFER = TICK_TIME * TPS * 60L;
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+ private long lastTick = 0;
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+ private long catchupTime = 0;
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+ public final RollingAverage tps1 = new RollingAverage(60);
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+ public final RollingAverage tps5 = new RollingAverage(60 * 5);
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+ public final RollingAverage tps15 = new RollingAverage(60 * 15);
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+
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+ public static class RollingAverage {
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+ private final int size;
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+ private long time;
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+ private java.math.BigDecimal total;
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+ private int index = 0;
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+ private final java.math.BigDecimal[] samples;
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+ private final long[] times;
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+
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+ RollingAverage(int size) {
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+ this.size = size;
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+ this.time = size * SEC_IN_NANO;
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+ this.total = dec(TPS).multiply(dec(SEC_IN_NANO)).multiply(dec(size));
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+ this.samples = new java.math.BigDecimal[size];
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+ this.times = new long[size];
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+ for (int i = 0; i < size; i++) {
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+ this.samples[i] = dec(TPS);
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+ this.times[i] = SEC_IN_NANO;
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+ }
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+ }
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+
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+ private static java.math.BigDecimal dec(long t) {
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+ return new java.math.BigDecimal(t);
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+ }
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+ public void add(java.math.BigDecimal x, long t) {
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+ time -= times[index];
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+ total = total.subtract(samples[index].multiply(dec(times[index])));
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+ samples[index] = x;
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+ times[index] = t;
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+ time += t;
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+ total = total.add(x.multiply(dec(t)));
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+ if (++index == size) {
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+ index = 0;
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+ }
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+ }
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+
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+ public double getAverage() {
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+ return total.divide(dec(time), 30, java.math.RoundingMode.HALF_UP).doubleValue();
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+ }
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+ }
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+ private static final java.math.BigDecimal TPS_BASE = new java.math.BigDecimal(1E9).multiply(new java.math.BigDecimal(SAMPLE_INTERVAL));
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+ // Paper End
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// Spigot End
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public void run() {
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@@ -704,29 +755,47 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
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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, tickCount = 1;
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+ long start = System.nanoTime(), curTime, wait, tickSection = start; // Paper - Further improve server tick loop
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+ lastTick = start - TICK_TIME; // Paper
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while (this.isRunning) {
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curTime = System.nanoTime();
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- wait = TICK_TIME - (curTime - lastTick) - catchupTime;
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+ // Paper start - Further improve server tick loop
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+ wait = TICK_TIME - (curTime - lastTick);
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+ if (wait > 0) {
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+ if (catchupTime < 2E6) {
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+ wait += Math.abs(catchupTime);
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+ } else if (wait < catchupTime) {
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+ catchupTime -= wait;
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+ wait = 0;
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+ } else {
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+ wait -= catchupTime;
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+ catchupTime = 0;
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+ }
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+ }
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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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+ curTime = System.nanoTime();
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+ wait = TICK_TIME - (curTime - lastTick);
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}
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- if ( tickCount++ % SAMPLE_INTERVAL == 0 )
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+ catchupTime = Math.min(MAX_CATCHUP_BUFFER, catchupTime - wait);
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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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+ final long diff = curTime - tickSection;
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+ java.math.BigDecimal currentTps = TPS_BASE.divide(new java.math.BigDecimal(diff), 30, java.math.RoundingMode.HALF_UP);
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+ tps1.add(currentTps, diff);
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+ tps5.add(currentTps, diff);
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+ tps15.add(currentTps, diff);
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+ // Backwards compat with bad plugins
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+ recentTps[0] = tps1.getAverage();
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+ recentTps[1] = tps5.getAverage();
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+ recentTps[2] = tps15.getAverage();
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+ // Paper end
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tickSection = curTime;
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}
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lastTick = curTime;
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- MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit
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+ //MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit // Paper - don't overwrite current tick time
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this.a(this::canSleepForTick);
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this.nextTick += 50L;
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// Spigot end
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index ed0221f0d..212e3cd4a 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -1942,6 +1942,17 @@ public final class CraftServer implements Server {
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return CraftMagicNumbers.INSTANCE;
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}
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+ // Paper - Add getTPS API - Further improve tick loop
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+ @Override
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+ public double[] getTPS() {
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+ return new double[] {
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+ MinecraftServer.getServer().tps1.getAverage(),
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+ MinecraftServer.getServer().tps5.getAverage(),
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+ MinecraftServer.getServer().tps15.getAverage()
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+ };
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+ }
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+ // Paper end
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+
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private final Spigot spigot = new Spigot()
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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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index be2e31dea..6d21c3269 100644
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--- a/src/main/java/org/spigotmc/TicksPerSecondCommand.java
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+++ b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
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@@ -1,8 +1,5 @@
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package org.spigotmc;
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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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@@ -26,18 +23,20 @@ public class TicksPerSecondCommand extends Command
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return true;
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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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+ // Paper start - Further improve tick handling
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+ double[] tps = org.bukkit.Bukkit.getTPS();
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+ String[] tpsAvg = new String[tps.length];
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+
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+ for ( int i = 0; i < tps.length; i++) {
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+ tpsAvg[i] = format( tps[i] );
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}
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- sender.sendMessage( sb.substring( 0, sb.length() - 2 ) );
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+ sender.sendMessage( ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " + org.apache.commons.lang.StringUtils.join(tpsAvg, ", "));
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+ // Paper end
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return true;
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}
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- private String format(double tps)
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+ private static String format(double tps) // Paper - Made static
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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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2.20.1
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