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36f34f01c0
Upstream has released updates that appears 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: da9ef3c5 #496: Add methods to get/set ItemStacks in EquipmentSlots 3abebc9f #492: Let Tameable extend Animals rather than Entity 941111a0 #495: Expose ItemStack and hand used in PlayerShearEntityEvent 4fe19cae #494: InventoryView - Add missing Brewing FUEL_TIME CraftBukkit Changes:933e9094#664: Add methods to get/set ItemStacks in EquipmentSlots18722312#662: Expose ItemStack and hand used in PlayerShearEntityEvent
31 lines
1.5 KiB
Diff
31 lines
1.5 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: Mon, 4 May 2020 01:08:56 -0400
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Subject: [PATCH] Set cap on JDK per-thread native byte buffer cache
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See: https://www.evanjones.ca/java-bytebuffer-leak.html
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This is potentially a source of lots of native memory usage.
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We are clearly seeing native usage upwards to 1-4GB which doesn't make sense.
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Region File usage fixed in previous patch should of tecnically only been somewhat
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temporary until GC finally gets it some time later, but between all the various
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plugins doing IO on various threads, this hidden detail of the JDK could be
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keeping long lived large direct buffers in cache.
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Set system properly at server startup if not set already to help protect from this.
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diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
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index 093dbeae2784d51dae74f66e3e1ce5bf6a370428..93340e9470b23f2d8c91338e63e95c6465e69c3c 100644
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--- a/src/main/java/org/bukkit/craftbukkit/Main.java
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+++ b/src/main/java/org/bukkit/craftbukkit/Main.java
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@@ -21,6 +21,7 @@ public class Main {
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public static void main(String[] args) {
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// Todo: Installation script
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+ if (System.getProperty("jdk.nio.maxCachedBufferSize") == null) System.setProperty("jdk.nio.maxCachedBufferSize", "262144"); // Paper - cap per-thread NIO cache size
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OptionParser parser = new OptionParser() {
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{
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acceptsAll(asList("?", "help"), "Show the help");
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