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Paper/patches/server/0791-Do-not-overload-I-O-threads-with-chunk-data-while-fl.patch
Spottedleaf 286bd1bfb5
1.18 misc performance dev branch (#7368)
- Port player chunk loader patch
Makes the chunk system act as it did in 1.17, no additional tickets (and thus logic) to make a chunk ticking.
Adds simulation distance API, deprecates old no-tick method.
- More collision optimisations
Ancient patch from tuinity that never could be pushed to master.
- Fix Optimise ArraySetSorted#removeIf patch
- Execute chunk tasks fairly for worlds while waiting for next tick
- Port Replace ticket level propagator
2022-02-18 09:44:46 -08:00

43 Zeilen
2.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 16 Oct 2021 01:36:00 -0700
Subject: [PATCH] Do not overload I/O threads with chunk data while flush
saving
If the chunk count is high, then the memory used by the
chunks adds up and could cause problems. By flushing
every so many chunks, the server will not become
stressed for memory. It will also not increase the total
time to save, as flush saving performs a full flush at
the end anyways.
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 3c90c6514dc856490da7fca5c8a42023493836d7..8678640da7724283664e3f115230d6b2687967b1 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -892,6 +892,16 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
// Paper end
protected void saveAllChunks(boolean flush) {
+ // Paper start - do not overload I/O threads with too much work when saving
+ int[] saved = new int[1];
+ int maxAsyncSaves = 50;
+ Runnable onChunkSave = () -> {
+ if (++saved[0] >= maxAsyncSaves) {
+ saved[0] = 0;
+ com.destroystokyo.paper.io.PaperFileIOThread.Holder.INSTANCE.flush();
+ }
+ };
+ // Paper end - do not overload I/O threads with too much work when saving
if (flush) {
List<ChunkHolder> list = (List) this.updatingChunks.getVisibleValuesCopy().stream().filter(ChunkHolder::wasAccessibleSinceLastSave).peek(ChunkHolder::refreshAccessibility).collect(Collectors.toList()); // Paper
MutableBoolean mutableboolean = new MutableBoolean();
@@ -914,6 +924,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
}).filter((ichunkaccess) -> {
return ichunkaccess instanceof ImposterProtoChunk || ichunkaccess instanceof LevelChunk;
}).filter(this::save).forEach((ichunkaccess) -> {
+ onChunkSave.run(); // Paper - do not overload I/O threads with too much work when saving
mutableboolean.setTrue();
});
} while (mutableboolean.isTrue());