Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-16 03:20:07 +01:00
157 Zeilen
8.2 KiB
Diff
157 Zeilen
8.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Spottedleaf <spottedleaf@spottedleaf.dev>
|
|
Date: Mon, 6 Apr 2020 04:20:44 -0700
|
|
Subject: [PATCH] Execute chunk tasks mid-tick
|
|
|
|
This will help the server load chunks if tick times are high.
|
|
|
|
diff --git a/src/main/java/co/aikar/timings/MinecraftTimings.java b/src/main/java/co/aikar/timings/MinecraftTimings.java
|
|
index b27021a42cbed3f0648a8d0903d00d03922ae221..eada966d7f108a6081be7a848f5c1dfcb1eed676 100644
|
|
--- a/src/main/java/co/aikar/timings/MinecraftTimings.java
|
|
+++ b/src/main/java/co/aikar/timings/MinecraftTimings.java
|
|
@@ -45,6 +45,8 @@ public final class MinecraftTimings {
|
|
public static final Timing antiXrayUpdateTimer = Timings.ofSafe("anti-xray - update");
|
|
public static final Timing antiXrayObfuscateTimer = Timings.ofSafe("anti-xray - obfuscate");
|
|
|
|
+ public static final Timing midTickChunkTasks = Timings.ofSafe("Mid Tick Chunk Tasks");
|
|
+
|
|
private static final Map<Class<?>, String> taskNameCache = new MapMaker().weakKeys().makeMap();
|
|
|
|
private MinecraftTimings() {}
|
|
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
index 088334869cb62797a1e1d1bbb6187f03189d852d..c245c1f4611f7273c8da629f774e0c64e9f98fc2 100644
|
|
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
@@ -332,6 +332,76 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
|
|
return s0;
|
|
}
|
|
|
|
+ // Paper start - execute chunk tasks mid tick
|
|
+ static final long CHUNK_TASK_QUEUE_BACKOFF_MIN_TIME = 25L * 1000L; // 25us
|
|
+ static final long MAX_CHUNK_EXEC_TIME = 1000L; // 1us
|
|
+
|
|
+ static final long TASK_EXECUTION_FAILURE_BACKOFF = 5L * 1000L; // 5us
|
|
+
|
|
+ private static long lastMidTickExecute;
|
|
+ private static long lastMidTickExecuteFailure;
|
|
+
|
|
+ private boolean tickMidTickTasks() {
|
|
+ // give all worlds a fair chance at by targetting them all.
|
|
+ // if we execute too many tasks, that's fine - we have logic to correctly handle overuse of allocated time.
|
|
+ boolean executed = false;
|
|
+ for (ServerLevel world : this.getAllLevels()) {
|
|
+ long currTime = System.nanoTime();
|
|
+ if (currTime - world.lastMidTickExecuteFailure <= TASK_EXECUTION_FAILURE_BACKOFF) {
|
|
+ continue;
|
|
+ }
|
|
+ if (!world.getChunkSource().pollTask()) {
|
|
+ // we need to back off if this fails
|
|
+ world.lastMidTickExecuteFailure = currTime;
|
|
+ } else {
|
|
+ executed = true;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return executed;
|
|
+ }
|
|
+
|
|
+ public final void executeMidTickTasks() {
|
|
+ org.spigotmc.AsyncCatcher.catchOp("mid tick chunk task execution");
|
|
+ long startTime = System.nanoTime();
|
|
+ if ((startTime - lastMidTickExecute) <= CHUNK_TASK_QUEUE_BACKOFF_MIN_TIME || (startTime - lastMidTickExecuteFailure) <= TASK_EXECUTION_FAILURE_BACKOFF) {
|
|
+ // it's shown to be bad to constantly hit the queue (chunk loads slow to a crawl), even if no tasks are executed.
|
|
+ // so, backoff to prevent this
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ co.aikar.timings.MinecraftTimings.midTickChunkTasks.startTiming();
|
|
+ try {
|
|
+ for (;;) {
|
|
+ boolean moreTasks = this.tickMidTickTasks();
|
|
+ long currTime = System.nanoTime();
|
|
+ long diff = currTime - startTime;
|
|
+
|
|
+ if (!moreTasks || diff >= MAX_CHUNK_EXEC_TIME) {
|
|
+ if (!moreTasks) {
|
|
+ lastMidTickExecuteFailure = currTime;
|
|
+ }
|
|
+
|
|
+ // note: negative values reduce the time
|
|
+ long overuse = diff - MAX_CHUNK_EXEC_TIME;
|
|
+ if (overuse >= (10L * 1000L * 1000L)) { // 10ms
|
|
+ // make sure something like a GC or dumb plugin doesn't screw us over...
|
|
+ overuse = 10L * 1000L * 1000L; // 10ms
|
|
+ }
|
|
+
|
|
+ double overuseCount = (double)overuse/(double)MAX_CHUNK_EXEC_TIME;
|
|
+ long extraSleep = (long)Math.round(overuseCount*CHUNK_TASK_QUEUE_BACKOFF_MIN_TIME);
|
|
+
|
|
+ lastMidTickExecute = currTime + extraSleep;
|
|
+ return;
|
|
+ }
|
|
+ }
|
|
+ } finally {
|
|
+ co.aikar.timings.MinecraftTimings.midTickChunkTasks.stopTiming();
|
|
+ }
|
|
+ }
|
|
+ // Paper end - execute chunk tasks mid tick
|
|
+
|
|
public MinecraftServer(OptionSet options, DataPackConfig datapackconfiguration, Thread thread, RegistryAccess.RegistryHolder iregistrycustom_dimension, LevelStorageSource.LevelStorageAccess convertable_conversionsession, WorldData savedata, PackRepository resourcepackrepository, Proxy proxy, DataFixer datafixer, ServerResources datapackresources, @Nullable MinecraftSessionService minecraftsessionservice, @Nullable GameProfileRepository gameprofilerepository, @Nullable GameProfileCache usercache, ChunkProgressListenerFactory worldloadlistenerfactory) {
|
|
super("Server");
|
|
SERVER = this; // Paper - better singleton
|
|
@@ -1312,6 +1382,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
|
|
|
|
private boolean pollTaskInternal() {
|
|
if (super.pollTask()) {
|
|
+ this.executeMidTickTasks(); // Paper - execute chunk tasks mid tick
|
|
return true;
|
|
} else {
|
|
if (this.haveTime()) {
|
|
diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
|
|
index 482676d325a7d502fd74a67236eb05d97fac1d85..1560a58aa32d281870a9cc8213ec7b089e4cf4ba 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
|
|
@@ -1023,6 +1023,7 @@ public class ServerChunkCache extends ChunkSource {
|
|
iterator1 = shuffled.iterator();
|
|
}
|
|
|
|
+ int chunksTicked = 0; // Paper
|
|
try {
|
|
while (iterator1.hasNext()) {
|
|
LevelChunk chunk1 = iterator1.next();
|
|
@@ -1044,6 +1045,7 @@ public class ServerChunkCache extends ChunkSource {
|
|
|
|
if (this.level.shouldTickBlocksAt(chunkcoordintpair.toLong())) {
|
|
this.level.tickChunk(chunk1, k);
|
|
+ if ((chunksTicked++ & 1) == 0) net.minecraft.server.MinecraftServer.getServer().executeMidTickTasks(); // Paper
|
|
}
|
|
}
|
|
// Paper start - optimise chunk tick iteration
|
|
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
index 5e65df1a9a8282c4ffa06801379b79ab0ed1b45c..7e837b2896cac64a982d9025c4e190dfa7ebc451 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
@@ -201,7 +201,9 @@ public class ServerLevel extends Level implements WorldGenLevel {
|
|
private final StructureFeatureManager structureFeatureManager;
|
|
private final StructureCheck structureCheck;
|
|
private final boolean tickTime;
|
|
-
|
|
+ // Paper start - execute chunk tasks mid tick
|
|
+ public long lastMidTickExecuteFailure;
|
|
+ // Paper end - execute chunk tasks mid tick
|
|
|
|
// CraftBukkit start
|
|
private int tickPosition;
|
|
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
|
|
index 3831895e2219d846022500553d9b714c7d654b3a..86bcedec97f1bc95621380da6ad074bdcc4bfeab 100644
|
|
--- a/src/main/java/net/minecraft/world/level/Level.java
|
|
+++ b/src/main/java/net/minecraft/world/level/Level.java
|
|
@@ -896,6 +896,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
|
|
public <T extends Entity> void guardEntityTick(Consumer<T> tickConsumer, T entity) {
|
|
try {
|
|
tickConsumer.accept(entity);
|
|
+ MinecraftServer.getServer().executeMidTickTasks(); // Paper - execute chunk tasks mid tick
|
|
} catch (Throwable throwable) {
|
|
if (throwable instanceof ThreadDeath) throw throwable; // Paper
|
|
// Paper start - Prevent tile entity and entity crashes
|