1 files changed, 47 insertions, 0 deletions
diff --git a/patches/server/0746-Configurable-chat-thread-limit.patch b/patches/server/0746-Configurable-chat-thread-limit.patch
new file mode 100644
index 0000000000..62a41e3361
--- /dev/null
+++ b/patches/server/0746-Configurable-chat-thread-limit.patch
@@ -0,0 +1,47 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shane Freeder <[email protected]>
+Date: Sun, 18 Sep 2022 06:33:17 +0100
+Subject: [PATCH] Configurable chat thread limit
+
+By default, spigot shifts chat over to an unbounded thread pool,
+on a normal server, this really offers no gains, the creation of a thread
+on submitting to the pool on these servers eats more time vs just running it in
+the netty pipeline, however, on servers using plugins which do work in here, there
+could be some overall benefits to moving this stuff outside of the pipeline.
+
+In general, this patch does two things:
+1) Exposes the core size for the pool, this allows for ensuring that a number of threads
+sit around in the pool, mitigating the need for creating new threads; This IS however
+caveated, the ThreadPoolExecutor will ONLY create core threads as they're needed, it
+just won't allow for us to dip back under the # of core threads, this can potentially
+be mitigated by calling prestartCoreThread, however, I'm not sure if there is much justification
+for this
+2) Exposes a max size for the pool, as stated, by default this is unbounded, for most
+servers limiting the size of the pool is going to have 0 effects given how fast chat
+is actually processed, this is honestly really just exposed for the misnomers or people
+who just wanna ensure that this won't grow over a specific size if chat gets stupidly active
+
+diff --git a/src/main/java/io/papermc/paper/configuration/GlobalConfiguration.java b/src/main/java/io/papermc/paper/configuration/GlobalConfiguration.java
+index 7045040681e639f36fefcf2735f67367d5e3cbc4..cc847dce0116b8260790b890b1d5452c280e186c 100644
+--- a/src/main/java/io/papermc/paper/configuration/GlobalConfiguration.java
++++ b/src/main/java/io/papermc/paper/configuration/GlobalConfiguration.java
+@@ -287,7 +287,18 @@ public class GlobalConfiguration extends ConfigurationPart {
+ 
+             @PostProcess
+             private void postProcess() {
+-                // TODO: fill in separate patch
++                //noinspection ConstantConditions
++                if (net.minecraft.server.MinecraftServer.getServer() == null) return; // In testing env, this will be null here
++                int _chatExecutorMaxSize = (this.chatExecutorMaxSize <= 0) ? Integer.MAX_VALUE : this.chatExecutorMaxSize; // This is somewhat dumb, but, this is the default, do we cap this?;
++                int _chatExecutorCoreSize = Math.max(this.chatExecutorCoreSize, 0);
++
++                if (_chatExecutorMaxSize < _chatExecutorCoreSize) {
++                    _chatExecutorMaxSize = _chatExecutorCoreSize;
++                }
++
++                java.util.concurrent.ThreadPoolExecutor executor = (java.util.concurrent.ThreadPoolExecutor) net.minecraft.server.MinecraftServer.getServer().chatExecutor;
++                executor.setCorePoolSize(_chatExecutorCoreSize);
++                executor.setMaximumPoolSize(_chatExecutorMaxSize);
+             }
+         }
+         public int maxJoinsPerTick = 5;