42 Zeilen
1.9 KiB
Diff
42 Zeilen
1.9 KiB
Diff
|
From e2baf643e39f01e43476500f56f49ee1e284a1fb Mon Sep 17 00:00:00 2001
|
||
|
|
From: Aikar <aikar@aikar.co>
|
||
|
|
Date: Wed, 9 Sep 2015 21:09:58 -0400
|
||
|
|
Subject: [PATCH] Don't sleep between chunk saves
|
||
|
|
|
||
|
|
For some unknown reason, Minecraft is sleeping 10ms between every single chunk being saved to disk.
|
||
|
|
Under high chunk load/unload activity (lots of movement / teleporting), this causes the chunk unload queue
|
||
|
|
to build up in size.
|
||
|
|
|
||
|
|
This has multiple impacts:
|
||
|
|
1) Performance of the unload queue itself - The save thread is pretty ineffecient for how it accesses it
|
||
|
|
By letting the queue get larger, checking and popping work off the queue can get less performant.
|
||
|
|
2) Performance of chunk loading - As with #1, chunk loads also have to check this queue when loading
|
||
|
|
chunk data so that it doesn't load stale data if new data is pending write to disk.
|
||
|
|
3) Memory Usage - The entire chunk has been serialized to NBT, and now sits in this queue. This leads to
|
||
|
|
elevated memory usage, and then the objects used in the serialization sit around longer than needed,
|
||
|
|
resulting in promotion to Old Generation instead of dying young.
|
||
|
|
|
||
|
|
If there is work to do, then the thread should be doing its work, and only sleep when it is done.
|
||
|
|
|
||
|
|
diff --git a/src/main/java/net/minecraft/server/FileIOThread.java b/src/main/java/net/minecraft/server/FileIOThread.java
|
||
|
|
index 198b00f..c9b3bf4 100644
|
||
|
|
--- a/src/main/java/net/minecraft/server/FileIOThread.java
|
||
|
|
+++ b/src/main/java/net/minecraft/server/FileIOThread.java
|
||
|
|
@@ -39,11 +39,12 @@ public class FileIOThread implements Runnable {
|
||
|
|
++this.d;
|
||
|
|
}
|
||
|
|
|
||
|
|
+ /* // Spigot start - don't sleep in between chunks so we unload faster.
|
||
|
|
try {
|
||
|
|
Thread.sleep(this.e ? 0L : 10L);
|
||
|
|
} catch (InterruptedException interruptedexception) {
|
||
|
|
interruptedexception.printStackTrace();
|
||
|
|
- }
|
||
|
|
+ } */ // Spigot end
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.b.isEmpty()) {
|
||
|
|
--
|
||
|
|
2.1.4
|
||
|
|
|