mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-27 04:55:47 +01:00
f0409edcd7
Upon further knowledge of the system, it is known that region files are closing properly, as well as this didn't help native memory use anyways. This patch also caused issues compiling on a newer JDK being able to release the jar to java 8 users.
31 lines
1.5 KiB
Diff
31 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Mon, 4 May 2020 01:08:56 -0400
|
|
Subject: [PATCH] Set cap on JDK per-thread native byte buffer cache
|
|
|
|
See: https://www.evanjones.ca/java-bytebuffer-leak.html
|
|
|
|
This is potentially a source of lots of native memory usage.
|
|
|
|
We are clearly seeing native usage upwards to 1-4GB which doesn't make sense.
|
|
|
|
Region File usage fixed in previous patch should of tecnically only been somewhat
|
|
temporary until GC finally gets it some time later, but between all the various
|
|
plugins doing IO on various threads, this hidden detail of the JDK could be
|
|
keeping long lived large direct buffers in cache.
|
|
|
|
Set system properly at server startup if not set already to help protect from this.
|
|
|
|
diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
|
|
index 99e1e902d8fdf33c157416c5d6abc71b495ac48e..d6e5d014c0d81f5f7cff6638ccfc2e983fea53d9 100644
|
|
--- a/src/main/java/org/bukkit/craftbukkit/Main.java
|
|
+++ b/src/main/java/org/bukkit/craftbukkit/Main.java
|
|
@@ -21,6 +21,7 @@ public class Main {
|
|
|
|
public static void main(String[] args) {
|
|
// Todo: Installation script
|
|
+ if (System.getProperty("jdk.nio.maxCachedBufferSize") == null) System.setProperty("jdk.nio.maxCachedBufferSize", "262144"); // Paper - cap per-thread NIO cache size
|
|
OptionParser parser = new OptionParser() {
|
|
{
|
|
acceptsAll(asList("?", "help"), "Show the help");
|