From 88a605cc244a2c3f4c2d3321ea9c0c0b78715d9b Mon Sep 17 00:00:00 2001
From: ishland <ishlandmc@yeah.net>
Date: Fri, 9 Feb 2024 22:49:04 +0800
Subject: [PATCH] perf: limit enhanced autosave iteration to avoid issues with
 high RD

---
 .../enhanced_autosave/MixinThreadedAnvilChunkStorage.java   | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/idle_tasks/autosave/enhanced_autosave/MixinThreadedAnvilChunkStorage.java b/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/idle_tasks/autosave/enhanced_autosave/MixinThreadedAnvilChunkStorage.java
index 4e7673b33..5dea5ef0f 100644
--- a/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/idle_tasks/autosave/enhanced_autosave/MixinThreadedAnvilChunkStorage.java
+++ b/c2me-opts-scheduling/src/main/java/com/ishland/c2me/opts/scheduling/mixin/idle_tasks/autosave/enhanced_autosave/MixinThreadedAnvilChunkStorage.java
@@ -28,6 +28,9 @@ public abstract class MixinThreadedAnvilChunkStorage implements IThreadedAnvilCh
 
     @Shadow @Final private ThreadExecutor<Runnable> mainThreadExecutor;
 
+    @Unique
+    private static final int c2me$maxSearchPerCall = 128;
+
     @Unique
     private ObjectBidirectionalIterator<Long2ObjectMap.Entry<ChunkHolder>> c2me$saveChunksIterator;
     @Unique
@@ -51,8 +54,9 @@ private void onTick(CallbackInfo ci) {
             c2me$enhancedAutoSaveUpdateIterator();
         }
 
+        int i = 0;
         final ObjectBidirectionalIterator<Long2ObjectMap.Entry<ChunkHolder>> iterator = this.c2me$saveChunksIterator;
-        while (iterator.hasNext()) {
+        while (iterator.hasNext() && (i ++) < c2me$maxSearchPerCall) {
             final Long2ObjectMap.Entry<ChunkHolder> entry = iterator.next();
             final long pos = entry.getLongKey();
             final ChunkHolder chunkHolder = entry.getValue();