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b3f265d1b1
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: 0ca45a21 #503: Add PlayerHarvestBlockEvent dfa80a52 SPIGOT-5930: Add PlayerRespawnEvent#isAnchorSpawn CraftBukkit Changes:145921e2#676: Add PlayerHarvestBlockEvent47abffa2SPIGOT-5929: Angered zombified piglins do not inherit killed_by_player status7f6b4f58SPIGOT-5930: Add PlayerRespawnEvent#isAnchorSpawn94eff632SPIGOT-5867, MC-193339: NPE during shutdown when rcon enabled with no password068618ebSPIGOT-5927: Some items NBT data disappears Spigot Changes: beb7d47c Rebuild patches Fixes #3738
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 3e4454a14fdf6305b262c15cf67203854debef28..a8cd55d3c288f2f1c0f7f9392f2f08f12f69f969 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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@@ -20,6 +20,7 @@ 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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