Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: c9a46ebf #653: Add World#spawn with randomizeData parameter e49c2e3a Damageable should extend ItemMeta 01ff04f4 SPIGOT-5880, SPIGOT-5567: New ChunkGenerator API ca5b4b1a SPIGOT-6697: Deprecate generateTree with BlockChangeDelegate as it does not handle tiles CraftBukkit Changes: 7c8bbcbe SPIGOT-6716: Preserve the order of stored enchantments of enchanted books. 18027d02 #914: Add World#spawn with randomizeData parameter 3cad0316 SPIGOT-6714: Don't fire PlayerBucketEvent when empty 8c6d60cf Fix server crash with BlockPopulator when entities are at a negative chunk border 4f6bcc84 SPIGOT-5880, SPIGOT-5567: New ChunkGenerator API 78d5b35b SPIGOT-6697: Restore generateTree with BlockChangeDelegate behaviour 15792f0d Rebuild patch c949675e SPIGOT-6713: Cancelling EntityTransformEvent Causes Deceased Slimes To Not Despawn a955f15c Fix issues with new ChunkGenerator API a0a37f41 SPIGOT-6630: Replacing an enchantment on an item creates a conflict error Spigot Changes: b166a49b Rebuild patches 3c1fc60a SPIGOT-6693: Composters only take in one item at custom hopper speeds
101 lines
5 KiB
Diff
101 lines
5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 23 Oct 2018 23:14:38 -0400
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Subject: [PATCH] Improve Server Thread Pool and Thread Priorities
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Use a simple executor since Fork join is a much more complex pool
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type and we are not using its capabilities.
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Set thread priorities so main thread has above normal priority over
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server threads
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Allow usage of a single thread executor by not using ForkJoin so single core CPU's.
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diff --git a/src/main/java/net/minecraft/Util.java b/src/main/java/net/minecraft/Util.java
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index 65e0ca442980f273d2fe5f131e174cd92f80da20..81f4f26a6b83079d36acd1fd86dede0eb1116c01 100644
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--- a/src/main/java/net/minecraft/Util.java
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+++ b/src/main/java/net/minecraft/Util.java
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@@ -56,7 +56,7 @@ import java.util.stream.Stream;
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import javax.annotation.Nullable;
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import net.minecraft.resources.ResourceLocation;
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import net.minecraft.server.Bootstrap;
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-import net.minecraft.util.Mth;
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+import net.minecraft.server.ServerWorkerThread;
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import net.minecraft.util.datafix.DataFixers;
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import net.minecraft.world.level.block.state.properties.Property;
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import org.apache.commons.io.IOUtils;
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@@ -65,8 +65,8 @@ import org.apache.logging.log4j.Logger;
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public class Util {
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private static final AtomicInteger WORKER_COUNT = new AtomicInteger(1);
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- private static final ExecutorService BOOTSTRAP_EXECUTOR = makeExecutor("Bootstrap");
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- private static final ExecutorService BACKGROUND_EXECUTOR = makeExecutor("Main");
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+ private static final ExecutorService BOOTSTRAP_EXECUTOR = makeExecutor("Bootstrap", -2); // Paper - add -2 priority
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+ private static final ExecutorService BACKGROUND_EXECUTOR = makeExecutor("Main", -1); // Paper - add -1 priority
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private static final ExecutorService IO_POOL = makeIoExecutor();
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public static LongSupplier timeSource = System::nanoTime;
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public static final UUID NIL_UUID = new UUID(0L, 0L);
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@@ -101,14 +101,18 @@ public class Util {
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return Instant.now().toEpochMilli();
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}
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- private static ExecutorService makeExecutor(String name) {
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- int i = Mth.clamp(Runtime.getRuntime().availableProcessors() - 1, 1, 7);
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+ private static ExecutorService makeExecutor(String s, int priorityModifier) { // Paper - add priority
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+ // Paper start - use simpler thread pool that allows 1 thread
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+ int i = Math.min(8, Math.max(Runtime.getRuntime().availableProcessors() - 2, 1));
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+ i = Integer.getInteger("Paper.WorkerThreadCount", i);
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ExecutorService executorService;
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+
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if (i <= 0) {
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executorService = MoreExecutors.newDirectExecutorService();
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} else {
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- executorService = new ForkJoinPool(i, (forkJoinPool) -> {
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- ForkJoinWorkerThread forkJoinWorkerThread = new ForkJoinWorkerThread(forkJoinPool) {
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+ executorService = new java.util.concurrent.ThreadPoolExecutor(i, i,0L, TimeUnit.MILLISECONDS, new java.util.concurrent.LinkedBlockingQueue<Runnable>(), target -> new ServerWorkerThread(target, s, priorityModifier));
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+ }
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+ /*
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@Override
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protected void onTermination(Throwable throwable) {
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if (throwable != null) {
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@@ -124,6 +128,7 @@ public class Util {
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return forkJoinWorkerThread;
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}, Util::onThreadException, true);
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}
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+ }*/ // Paper end
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return executorService;
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}
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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 a727b0305b2dfb92c763ea1b31d85769868cfed2..8b81f618598a4a95e4cb19c3e65b7e6d03459530 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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@@ -316,6 +316,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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S s0 = serverFactory.apply(thread); // CraftBukkit - decompile error
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atomicreference.set(s0);
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+ thread.setPriority(Thread.NORM_PRIORITY+2); // Paper - boost priority
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thread.start();
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return s0;
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}
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diff --git a/src/main/java/net/minecraft/server/ServerWorkerThread.java b/src/main/java/net/minecraft/server/ServerWorkerThread.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..480129f430da33157342becb9d3b010f9f7c5edd
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--- /dev/null
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+++ b/src/main/java/net/minecraft/server/ServerWorkerThread.java
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@@ -0,0 +1,14 @@
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+package net.minecraft.server;
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+
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+import java.util.concurrent.atomic.AtomicInteger;
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+import net.minecraft.Util;
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+
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+public class ServerWorkerThread extends Thread {
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+ private static final AtomicInteger threadId = new AtomicInteger(1);
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+ public ServerWorkerThread(Runnable target, String poolName, int prioritityModifier) {
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+ super(target, "Worker-" + poolName + "-" + threadId.getAndIncrement());
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+ setPriority(Thread.NORM_PRIORITY+prioritityModifier); // Deprioritize over main
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+ this.setDaemon(true);
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+ this.setUncaughtExceptionHandler(Util::onThreadException);
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+ }
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+}
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