mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-02 13:07:06 +01:00
218 lines
11 KiB
Diff
218 lines
11 KiB
Diff
From 7014d349d3e52fe0aa58f9d2b6b72d2675396332 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Thu, 9 Apr 2020 00:09:26 -0400
|
|
Subject: [PATCH] Speed up processing of chunk loads and generation
|
|
|
|
Credit to Spotted for the idea
|
|
|
|
A lot of the new chunk system requires constant back and forth the main thread
|
|
to handle priority scheduling and ensuring conflicting tasks do not run at the
|
|
same time.
|
|
|
|
The issue is, these queues are only checked at either:
|
|
|
|
A) Sync Chunk Loads
|
|
B) End of Tick while sleeping
|
|
|
|
This results in generating chunks sitting waiting for a full tick to
|
|
complete before it will even start the next unit of work to do.
|
|
|
|
Additionally, this also delays loading of chunks until this same timing.
|
|
|
|
We will now periodically poll the chunk task queues throughout the tick,
|
|
looking for work to do.
|
|
We do this in a fair method that considers all worlds, not just the one being
|
|
ticked, so that each world can get 1 task procesed each before the next pass.
|
|
|
|
We also cap the throughput of these task processes to 1 per world per 0.1ms or
|
|
200 max per tick, to ensure that high volume of tasks do not overload the current
|
|
tick time.
|
|
|
|
In a view distance of 15, chunk loading performance was visually faster on the client.
|
|
|
|
Flying at high speed in spectator mode was able to keep up with chunk loading (as long as they are already generated)
|
|
|
|
diff --git a/src/main/java/co/aikar/timings/MinecraftTimings.java b/src/main/java/co/aikar/timings/MinecraftTimings.java
|
|
index 69e26a82..434833d5 100644
|
|
--- a/src/main/java/co/aikar/timings/MinecraftTimings.java
|
|
+++ b/src/main/java/co/aikar/timings/MinecraftTimings.java
|
|
@@ -13,6 +13,7 @@ import java.util.Map;
|
|
public final class MinecraftTimings {
|
|
|
|
public static final Timing serverOversleep = Timings.ofSafe("Server Oversleep");
|
|
+ public static final Timing midTickChunkTasks = Timings.ofSafe("Mid Tick Chunk Tasks");
|
|
public static final Timing playerListTimer = Timings.ofSafe("Player List");
|
|
public static final Timing commandFunctionsTimer = Timings.ofSafe("Command Functions");
|
|
public static final Timing connectionTimer = Timings.ofSafe("Connection Handler");
|
|
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
|
|
index 1c0a7f40..4af75a95 100644
|
|
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
|
|
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
|
|
@@ -681,6 +681,7 @@ public class ChunkProviderServer extends IChunkProvider {
|
|
this.world.getMethodProfiler().enter("purge");
|
|
this.world.timings.doChunkMap.startTiming(); // Spigot
|
|
this.chunkMapDistance.purgeTickets();
|
|
+ this.world.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
this.tickDistanceManager();
|
|
this.world.timings.doChunkMap.stopTiming(); // Spigot
|
|
this.world.getMethodProfiler().exitEnter("chunks");
|
|
@@ -690,6 +691,7 @@ public class ChunkProviderServer extends IChunkProvider {
|
|
this.world.timings.doChunkUnload.startTiming(); // Spigot
|
|
this.world.getMethodProfiler().exitEnter("unload");
|
|
this.playerChunkMap.unloadChunks(booleansupplier);
|
|
+ this.world.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
this.world.timings.doChunkUnload.stopTiming(); // Spigot
|
|
this.world.getMethodProfiler().exit();
|
|
this.clearCache();
|
|
@@ -748,7 +750,7 @@ public class ChunkProviderServer extends IChunkProvider {
|
|
entityPlayer.playerNaturallySpawnedEvent.callEvent();
|
|
};
|
|
// Paper end
|
|
- this.playerChunkMap.forEachVisibleChunk((playerchunk) -> { // Paper - safe iterator incase chunk loads, also no wrapping
|
|
+ final int[] chunksTicked = {0}; this.playerChunkMap.forEachVisibleChunk((playerchunk) -> { // Paper - safe iterator incase chunk loads, also no wrapping
|
|
Optional<Chunk> optional = ((Either) playerchunk.b().getNow(PlayerChunk.UNLOADED_CHUNK)).left();
|
|
|
|
if (optional.isPresent()) {
|
|
@@ -831,6 +833,7 @@ public class ChunkProviderServer extends IChunkProvider {
|
|
this.world.timings.chunkTicks.startTiming(); // Spigot // Paper
|
|
this.world.a(chunk, k);
|
|
this.world.timings.chunkTicks.stopTiming(); // Spigot // Paper
|
|
+ if (chunksTicked[0]++ % 10 == 0) this.world.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
}
|
|
}
|
|
});
|
|
@@ -972,6 +975,38 @@ public class ChunkProviderServer extends IChunkProvider {
|
|
super.executeTask(runnable);
|
|
}
|
|
|
|
+ // Paper start
|
|
+ private long lastChunkTask = 0;
|
|
+ public void midTickLoadChunks() {
|
|
+ MinecraftServer server = ChunkProviderServer.this.world.getMinecraftServer();
|
|
+ try (co.aikar.timings.Timing ignored = co.aikar.timings.MinecraftTimings.midTickChunkTasks.startTiming()) {
|
|
+ while (server.canSleepForTick()) {
|
|
+ try {
|
|
+ // always try to load chunks as long as we aren't falling behind, restrain generation/other updates only.
|
|
+ boolean execChunkTask = com.destroystokyo.paper.io.chunk.ChunkTaskManager.pollChunkWaitQueue() || ChunkProviderServer.this.world.asyncChunkTaskManager.pollNextChunkTask(); // Paper
|
|
+ if (ChunkProviderServer.this.tickDistanceManager() || execChunkTask) {
|
|
+ continue;
|
|
+ }
|
|
+ long now = System.nanoTime();
|
|
+ // cap to 1 task every 0.1ms per world and max 200 tasks per tick.
|
|
+ // Anything that doesn't make it past this can load during sleep
|
|
+ // we do not want to use this.executeNext as that also processes chunk loads and might count against task counter.
|
|
+ // We also have already ticked the distance manager above too.
|
|
+ if (server.chunksTasksRan < 200 && now - lastChunkTask > 100000 && super.executeNext()) {
|
|
+ ChunkProviderServer.this.lightEngine.queueUpdate();
|
|
+ server.chunksTasksRan++;
|
|
+ lastChunkTask = now;
|
|
+ }
|
|
+ break;
|
|
+ } finally {
|
|
+ // from below: process pending Chunk loadCallback() and unloadCallback() after each run task
|
|
+ playerChunkMap.callbackExecutor.run();
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
@Override
|
|
protected boolean executeNext() {
|
|
// CraftBukkit start - process pending Chunk loadCallback() and unloadCallback() after each run task
|
|
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
index e35bacac..2f424e6e 100644
|
|
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
|
|
@@ -907,6 +907,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
|
|
// Paper end
|
|
tickSection = curTime;
|
|
}
|
|
+ chunksTasksRan = 0; // Paper
|
|
// Spigot end
|
|
|
|
//MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit // Paper - don't overwrite current tick time
|
|
@@ -977,7 +978,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
|
|
|
|
}
|
|
|
|
- private boolean canSleepForTick() {
|
|
+ public boolean canSleepForTick() { // Paper
|
|
// CraftBukkit start
|
|
return this.forceTicks || this.isEntered() || SystemUtils.getMonotonicMillis() < (this.ac ? this.ab : this.nextTick);
|
|
}
|
|
@@ -1005,6 +1006,20 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
|
|
});
|
|
}
|
|
|
|
+ // Paper start
|
|
+ public int chunksTasksRan = 0;
|
|
+ public void midTickLoadChunks() {
|
|
+ if (!this.canSleepForTick()) {
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ Iterator<WorldServer> iterator = this.getWorlds().iterator();
|
|
+ while (this.canSleepForTick() && iterator.hasNext()) {
|
|
+ iterator.next().getChunkProvider().serverThreadQueue.midTickLoadChunks();
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
@Override
|
|
protected TickTask postToMainThread(Runnable runnable) {
|
|
return new TickTask(this.ticks, runnable);
|
|
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
|
|
index e61ddeb1..92c9ab43 100644
|
|
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
|
|
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
|
|
@@ -793,7 +793,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
|
|
CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> ret = new CompletableFuture<>();
|
|
|
|
Consumer<ChunkRegionLoader.InProgressChunkHolder> chunkHolderConsumer = (ChunkRegionLoader.InProgressChunkHolder holder) -> {
|
|
- PlayerChunkMap.this.executor.addTask(() -> {
|
|
+ com.destroystokyo.paper.io.chunk.ChunkTaskManager.queueChunkWaitTask(() -> {
|
|
ret.complete(syncLoadComplete.apply(holder, null));
|
|
});
|
|
};
|
|
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
|
|
index 969c6aad..4b9b79a9 100644
|
|
--- a/src/main/java/net/minecraft/server/WorldServer.java
|
|
+++ b/src/main/java/net/minecraft/server/WorldServer.java
|
|
@@ -420,6 +420,7 @@ public class WorldServer extends World {
|
|
}
|
|
timings.scheduledBlocks.stopTiming(); // Spigot
|
|
|
|
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
gameprofilerfiller.exitEnter("raid");
|
|
this.timings.raids.startTiming(); // Paper - timings
|
|
this.persistentRaid.a();
|
|
@@ -432,6 +433,7 @@ public class WorldServer extends World {
|
|
timings.doSounds.startTiming(); // Spigot
|
|
this.ad();
|
|
timings.doSounds.stopTiming(); // Spigot
|
|
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
this.ticking = false;
|
|
gameprofilerfiller.exitEnter("entities");
|
|
boolean flag3 = true || !this.players.isEmpty() || !this.getForceLoadedChunks().isEmpty(); // CraftBukkit - this prevents entity cleanup, other issues on servers with no players
|
|
@@ -517,6 +519,7 @@ public class WorldServer extends World {
|
|
timings.entityTick.stopTiming(); // Spigot
|
|
|
|
this.tickingEntities = false;
|
|
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
|
|
try (co.aikar.timings.Timing ignored = this.timings.newEntities.startTiming()) { // Paper - timings
|
|
while ((entity = (Entity) this.entitiesToAdd.poll()) != null) {
|
|
@@ -527,7 +530,9 @@ public class WorldServer extends World {
|
|
|
|
gameprofilerfiller.exit();
|
|
timings.tickEntities.stopTiming(); // Spigot
|
|
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
this.tickBlockEntities();
|
|
+ this.getMinecraftServer().midTickLoadChunks(); // Paper
|
|
}
|
|
|
|
gameprofilerfiller.exit();
|
|
--
|
|
2.25.1.windows.1
|
|
|