Paper/CraftBukkit-Patches/0058-Configurable-Amount-of...

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From 6ba534764c69a6f193cb1fce8af5d6e13a0f6b1e Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Fri, 13 Dec 2013 11:58:58 +1100
Subject: [PATCH] Configurable Amount of Netty Threads
This brings back the option that the Spigot version of netty saw. By default Netty will try and use cores*2 threads, however if running multiple servers on the same machine, this can be too many threads. Additionally some people have 16 core servers. If 32 Netty threads are allowed in this setup, then the lock contention, and thus blocking between threads becomes much greater, leading to decreased performance.
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 65c3a66..79f0fdb 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -61,7 +61,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
private final List o = Lists.newArrayList();
private final ICommandHandler p;
public final MethodProfiler methodProfiler = new MethodProfiler();
- private final ServerConnection q;
+ private ServerConnection q; // Spigot
private final ServerPing r = new ServerPing();
private final Random s = new Random();
private String serverIp;
@@ -123,7 +123,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
this.d = proxy;
MinecraftServer.k = this;
// this.universe = file; // CraftBukkit
- this.q = new ServerConnection(this);
+ // this.q = new ServerConnection(this); // Spigot
this.Z = new UserCache(this, file1);
this.p = this.h();
// this.convertable = new WorldLoaderServer(file); // CraftBukkit - moved to DedicatedServer.init
@@ -1333,7 +1333,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
}
// Spigot End
public ServerConnection ao() {
- return this.q;
+ return this.q == null ? this.q = new ServerConnection(this) : this.q; // Spigot
}
public boolean aq() {
diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
index 47ab82f..865a17f 100644
--- a/src/main/java/org/spigotmc/SpigotConfig.java
+++ b/src/main/java/org/spigotmc/SpigotConfig.java
@@ -220,4 +220,11 @@ public class SpigotConfig
}
bungee = getBoolean( "settings.bungeecord", false );
}
+
+ private static void nettyThreads()
+ {
+ int count = getInt( "settings.netty-threads", 4 );
+ System.setProperty( "io.netty.eventLoopThreads", Integer.toString( count ) );
+ Bukkit.getLogger().log( Level.INFO, "Using {0} threads for Netty based IO", count );
+ }
}
--
2.1.0