112 lines
4.8 KiB
Diff
112 lines
4.8 KiB
Diff
From c703e646937694eef89f39aca50807f9c6cac216 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 1 Jan 2018 16:10:24 -0500
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Subject: [PATCH] Configurable Max Chunk Gens per Tick
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Limit the number of generations that can occur in a single tick, forcing them
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to be spread out more.
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Defaulting to 10 as an average generation is going to be 3-6ms, which means 10 will
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likely cause the server to lose TPS, but constrain how much.
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This should result in no noticeable speed reduction in generation for servers not
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lagging, and let larger servers reduce this value according to their own desires.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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index 29cb718fb..695bdf2e6 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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@@ -393,4 +393,15 @@ public class PaperWorldConfig {
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}
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log("Max Chunk Sends Per Tick: " + maxChunkSendsPerTick);
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}
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+
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+ public int maxChunkGensPerTick = 10;
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+ private void maxChunkGensPerTick() {
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+ maxChunkGensPerTick = getInt("max-chunk-gens-per-tick", maxChunkGensPerTick);
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+ if (maxChunkGensPerTick <= 0) {
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+ maxChunkGensPerTick = Integer.MAX_VALUE;
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+ log("Max Chunk Gens Per Tick: Unlimited (NOT RECOMMENDED)");
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+ } else {
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+ log("Max Chunk Gens Per Tick: " + maxChunkGensPerTick);
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+ }
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
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index b9d90c4fb..7d3f846a1 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunk.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
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@@ -21,6 +21,7 @@ public class PlayerChunk {
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private int h;
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private long i;
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private boolean done;
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+ boolean chunkExists; // Paper
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public PlayerChunk(PlayerChunkMap playerchunkmap, int i, int j) {
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this.playerChunkMap = playerchunkmap;
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@@ -29,6 +30,7 @@ public class PlayerChunk {
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chunkproviderserver.a(i, j);
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this.chunk = chunkproviderserver.getChunkAt(i, j, true, false);
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+ this.chunkExists = this.chunk != null || org.bukkit.craftbukkit.chunkio.ChunkIOExecutor.hasQueuedChunkLoad(playerChunkMap.getWorld(), i, j); // Paper
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markChunkUsed(); // Paper - delay chunk unloads
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}
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diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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index f481e5a4f..679488a3c 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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@@ -132,6 +132,7 @@ public class PlayerChunkMap {
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// Spigot start
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org.spigotmc.SlackActivityAccountant activityAccountant = this.world.getMinecraftServer().slackActivityAccountant;
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activityAccountant.startActivity(0.5);
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+ int chunkGensAllowed = world.paperConfig.maxChunkGensPerTick; // Paper
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// Spigot end
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Iterator iterator1 = this.h.iterator();
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@@ -141,6 +142,11 @@ public class PlayerChunkMap {
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if (playerchunk1.f() == null) {
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boolean flag = playerchunk1.a(PlayerChunkMap.b);
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+ // Paper start
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+ if (flag && !playerchunk1.chunkExists && chunkGensAllowed-- <= 0) {
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+ continue;
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+ }
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+ // Paper end
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if (playerchunk1.a(flag)) {
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iterator1.remove();
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diff --git a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
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index 7ffb8f617..33d5fc7d5 100644
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--- a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
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+++ b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
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@@ -34,4 +34,10 @@ public class ChunkIOExecutor {
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public static void tick() {
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instance.finishActive();
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}
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+
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+ // Paper start
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+ public static boolean hasQueuedChunkLoad(World world, int x, int z) {
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+ return instance.hasTask(new QueuedChunk(x, z, null, world, null));
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+ }
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+ // Paper end
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java b/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
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index 193c3621c..cf1258c55 100644
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--- a/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
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+++ b/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
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@@ -351,4 +351,10 @@ public final class AsynchronousExecutor<P, T, C, E extends Throwable> {
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public void setActiveThreads(final int coreSize) {
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pool.setCorePoolSize(coreSize);
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}
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+
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+ // Paper start
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+ public boolean hasTask(P parameter) throws IllegalStateException {
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+ return tasks.get(parameter) != null;
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+ }
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+ // Paper end
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}
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--
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2.20.1
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