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https://github.com/PaperMC/Paper.git
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1358d1e914
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: 881e06e5 PR-725: Add Item Unlimited Lifetime APIs CraftBukkit Changes: 74c08312 SPIGOT-6962: Call EntityChangeBlockEvent when when FallingBlockEntity starts to fall 64db5126 SPIGOT-6959: Make /loot command ignore empty items for spawn 2d760831 Increase outdated build delay 9ed7e4fb SPIGOT-6138, SPIGOT-6415: Don't call CreatureSpawnEvent after cross-dimensional travel fc4ad813 SPIGOT-6895: Trees grown with applyBoneMeal() don't fire the StructureGrowthEvent 59733a2e SPIGOT-6961: Actually return a copy of the ItemMeta Spigot Changes: ffceeae3 SPIGOT-6956: Drop unload queue patch as attempt at fixing stop issue e19ddabd PR-1011: Add Item Unlimited Lifetime APIs 34d40b0e SPIGOT-2942: give command fires PlayerDropItemEvent, cancelling it causes Item Duplication
91 lines
4.7 KiB
Diff
91 lines
4.7 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 90d22b75fd33d8355e59b6bab79757c5b436c9d7..a8772417eb54e1a52c490b75b470a502a480f925 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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@@ -69,8 +69,8 @@ public class Util {
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private static final int DEFAULT_MAX_THREADS = 255;
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private static final String MAX_THREADS_SYSTEM_PROPERTY = "max.bg.threads";
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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 Ticker TICKER = new Ticker() {
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@@ -112,14 +112,18 @@ 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, getMaxThreads());
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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 net.minecraft.server.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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@@ -135,6 +139,7 @@ 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 785df5ec8a5a4e307149edd5ccf7db75f7edb1fc..de10fc8a9d08dbab245292a4291590b54b0aa609 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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@@ -318,6 +318,7 @@ 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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