PaperMC/Spigot-Server-Patches/0222-Configurable-Max-Chunk-Gens-per-Tick.patch
Shane Freeder ea855e2b46 Updated Upstream (Bukkit/CraftBukkit/Spigot)
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

Developers!: You will need to clean up your work/Minecraft/1.13.2 folder
for this

Also, restore a patch that was dropped in the last upstream

Bukkit Changes:
279eeab3 Fix command description not being set
96e2bb18 Remove debug print from SyntheticEventTest

CraftBukkit Changes:
d3ed1516 Fix dangerously threaded beacons
217a293d Don't relocate joptsimple to allow --help to work.
1be05a21 Prepare for imminent Java 12 release
a49270b2 Mappings Update
5259d80c SPIGOT-4669: Fix PlayerTeleportEvent coordinates for relative teleports

Spigot Changes:
e6eb36f2 Rebuild patches
2019-03-20 01:55:16 +00:00

111 lines
4.8 KiB
Diff

From 6a576fd91e6c21dca0af32180d32e465909b6440 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 1 Jan 2018 16:10:24 -0500
Subject: [PATCH] Configurable Max Chunk Gens per Tick
Limit the number of generations that can occur in a single tick, forcing them
to be spread out more.
Defaulting to 10 as an average generation is going to be 3-6ms, which means 10 will
likely cause the server to lose TPS, but constrain how much.
This should result in no noticeable speed reduction in generation for servers not
lagging, and let larger servers reduce this value according to their own desires.
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 29cb718fb..695bdf2e6 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -393,4 +393,15 @@ public class PaperWorldConfig {
}
log("Max Chunk Sends Per Tick: " + maxChunkSendsPerTick);
}
+
+ public int maxChunkGensPerTick = 10;
+ private void maxChunkGensPerTick() {
+ maxChunkGensPerTick = getInt("max-chunk-gens-per-tick", maxChunkGensPerTick);
+ if (maxChunkGensPerTick <= 0) {
+ maxChunkGensPerTick = Integer.MAX_VALUE;
+ log("Max Chunk Gens Per Tick: Unlimited (NOT RECOMMENDED)");
+ } else {
+ log("Max Chunk Gens Per Tick: " + maxChunkGensPerTick);
+ }
+ }
}
diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
index b9d90c4fb..7d3f846a1 100644
--- a/src/main/java/net/minecraft/server/PlayerChunk.java
+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
@@ -21,6 +21,7 @@ public class PlayerChunk {
private int h;
private long i;
private boolean done;
+ boolean chunkExists; // Paper
public PlayerChunk(PlayerChunkMap playerchunkmap, int i, int j) {
this.playerChunkMap = playerchunkmap;
@@ -29,6 +30,7 @@ public class PlayerChunk {
chunkproviderserver.a(i, j);
this.chunk = chunkproviderserver.getChunkAt(i, j, true, false);
+ this.chunkExists = this.chunk != null || org.bukkit.craftbukkit.chunkio.ChunkIOExecutor.hasQueuedChunkLoad(playerChunkMap.getWorld(), i, j); // Paper
markChunkUsed(); // Paper - delay chunk unloads
}
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index f481e5a4f..679488a3c 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -132,6 +132,7 @@ public class PlayerChunkMap {
// Spigot start
org.spigotmc.SlackActivityAccountant activityAccountant = this.world.getMinecraftServer().slackActivityAccountant;
activityAccountant.startActivity(0.5);
+ int chunkGensAllowed = world.paperConfig.maxChunkGensPerTick; // Paper
// Spigot end
Iterator iterator1 = this.h.iterator();
@@ -141,6 +142,11 @@ public class PlayerChunkMap {
if (playerchunk1.f() == null) {
boolean flag = playerchunk1.a(PlayerChunkMap.b);
+ // Paper start
+ if (flag && !playerchunk1.chunkExists && chunkGensAllowed-- <= 0) {
+ continue;
+ }
+ // Paper end
if (playerchunk1.a(flag)) {
iterator1.remove();
diff --git a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
index 7ffb8f617..33d5fc7d5 100644
--- a/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
+++ b/src/main/java/org/bukkit/craftbukkit/chunkio/ChunkIOExecutor.java
@@ -34,4 +34,10 @@ public class ChunkIOExecutor {
public static void tick() {
instance.finishActive();
}
+
+ // Paper start
+ public static boolean hasQueuedChunkLoad(World world, int x, int z) {
+ return instance.hasTask(new QueuedChunk(x, z, null, world, null));
+ }
+ // Paper end
}
diff --git a/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java b/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
index 193c3621c..cf1258c55 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/AsynchronousExecutor.java
@@ -351,4 +351,10 @@ public final class AsynchronousExecutor<P, T, C, E extends Throwable> {
public void setActiveThreads(final int coreSize) {
pool.setCorePoolSize(coreSize);
}
+
+ // Paper start
+ public boolean hasTask(P parameter) throws IllegalStateException {
+ return tasks.get(parameter) != null;
+ }
+ // Paper end
}
--
2.21.0