Remove our own changes to the chunk save queue
Dieser Commit ist enthalten in:
Zach Brown
Ursprung
5ad0ea6eb8
Commit
35f085a017
@ -1,169 +0,0 @@
|
||||
From 15f73df80f65604080b217caa144ce218bffc96f Mon Sep 17 00:00:00 2001
|
||||
From: Aikar <aikar@aikar.co>
|
||||
Date: Fri, 4 Mar 2016 18:18:37 -0600
|
||||
Subject: [PATCH] Chunk save queue improvements
|
||||
|
||||
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.
|
||||
|
||||
Additionally, optimize the ChunkRegionLoader queue to reduce lock contention (issue with 1.9)
|
||||
|
||||
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
||||
index 62f4631..ed49d83 100644
|
||||
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
||||
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
||||
@@ -164,4 +164,10 @@ public class PaperConfig {
|
||||
}
|
||||
return time;
|
||||
}
|
||||
+
|
||||
+ public static boolean enableFileIOThreadSleep;
|
||||
+ private static void enableFileIOThreadSleep() {
|
||||
+ enableFileIOThreadSleep = getBoolean("settings.sleep-between-chunk-saves", false);
|
||||
+ if (enableFileIOThreadSleep) Bukkit.getLogger().info("Enabled sleeping between chunk saves, beware of memory issues");
|
||||
+ }
|
||||
}
|
||||
diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
|
||||
index 5bd6ce0..336e780 100644
|
||||
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
|
||||
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
|
||||
@@ -11,14 +11,17 @@ import java.util.List;
|
||||
import java.util.Map;
|
||||
import java.util.Set;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
+import java.util.concurrent.ConcurrentLinkedQueue; // Paper
|
||||
import org.apache.logging.log4j.LogManager;
|
||||
import org.apache.logging.log4j.Logger;
|
||||
|
||||
public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
|
||||
|
||||
+ private ConcurrentLinkedQueue<QueuedChunk> queue = new ConcurrentLinkedQueue<QueuedChunk>(); // Paper - Chunk queue improvements
|
||||
+ private final Object lock = new Object(); // Paper - Chunk queue improvements
|
||||
private static final Logger a = LogManager.getLogger();
|
||||
private Map<ChunkCoordIntPair, NBTTagCompound> b = new ConcurrentHashMap();
|
||||
- private Set<ChunkCoordIntPair> c = Collections.newSetFromMap(new ConcurrentHashMap());
|
||||
+ //private Set<ChunkCoordIntPair> c = Collections.newSetFromMap(new ConcurrentHashMap()); // Paper - Chunk queue improvements
|
||||
private final File d;
|
||||
private final DataConverterManager e;
|
||||
private boolean f = false;
|
||||
@@ -32,11 +35,11 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
|
||||
public boolean chunkExists(World world, int i, int j) {
|
||||
ChunkCoordIntPair chunkcoordintpair = new ChunkCoordIntPair(i, j);
|
||||
|
||||
- if (this.c.contains(chunkcoordintpair)) {
|
||||
+ //if (this.c.contains(chunkcoordintpair)) { // Paper - Chunk queue improvements
|
||||
if (this.b.containsKey(chunkcoordintpair)) {
|
||||
return true;
|
||||
}
|
||||
- }
|
||||
+ //} // Paper - Chunk queue improvements
|
||||
|
||||
// Paper start - Don't create region files when checking that they exist
|
||||
final RegionFile region = RegionFileCache.a(this.d, i, j, false);
|
||||
@@ -139,28 +142,32 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
|
||||
}
|
||||
|
||||
protected void a(ChunkCoordIntPair chunkcoordintpair, NBTTagCompound nbttagcompound) {
|
||||
- if (!this.c.contains(chunkcoordintpair)) {
|
||||
+ synchronized (lock) { // Paper - Chunk queue improvements
|
||||
this.b.put(chunkcoordintpair, nbttagcompound);
|
||||
}
|
||||
+ queue.add(new QueuedChunk(chunkcoordintpair, nbttagcompound)); // Paper - Chunk queue improvements
|
||||
|
||||
FileIOThread.a().a(this);
|
||||
}
|
||||
|
||||
public boolean c() {
|
||||
- if (this.b.isEmpty()) {
|
||||
+ // Paper start - Chunk queue improvements
|
||||
+ QueuedChunk chunk = queue.poll();
|
||||
+ if (chunk == null) {
|
||||
+ // Paper - end
|
||||
if (this.f) {
|
||||
ChunkRegionLoader.a.info("ThreadedAnvilChunkStorage ({}): All chunks are saved", new Object[] { this.d.getName()});
|
||||
}
|
||||
|
||||
return false;
|
||||
} else {
|
||||
- ChunkCoordIntPair chunkcoordintpair = (ChunkCoordIntPair) this.b.keySet().iterator().next();
|
||||
+ ChunkCoordIntPair chunkcoordintpair = chunk.coords; // Paper - Chunk queue improvements
|
||||
|
||||
boolean flag;
|
||||
|
||||
try {
|
||||
- this.c.add(chunkcoordintpair);
|
||||
- NBTTagCompound nbttagcompound = (NBTTagCompound) this.b.remove(chunkcoordintpair);
|
||||
+ //this.c.add(chunkcoordintpair);
|
||||
+ NBTTagCompound nbttagcompound = chunk.compound; // Paper - Chunk queue improvements
|
||||
|
||||
if (nbttagcompound != null) {
|
||||
try {
|
||||
@@ -169,10 +176,11 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
|
||||
ChunkRegionLoader.a.error("Failed to save chunk", exception);
|
||||
}
|
||||
}
|
||||
+ synchronized (lock) { if (this.b.get(chunkcoordintpair) == nbttagcompound) { this.b.remove(chunkcoordintpair); } }// Paper - This will not equal if a newer version is still pending
|
||||
|
||||
flag = true;
|
||||
} finally {
|
||||
- this.c.remove(chunkcoordintpair);
|
||||
+ //this.c.remove(chunkcoordintpair); // Paper
|
||||
}
|
||||
|
||||
return flag;
|
||||
@@ -503,4 +511,16 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
|
||||
return entity;
|
||||
}
|
||||
}
|
||||
+
|
||||
+ // Paper start - Chunk queue improvements
|
||||
+ private static class QueuedChunk {
|
||||
+ public ChunkCoordIntPair coords;
|
||||
+ public NBTTagCompound compound;
|
||||
+
|
||||
+ public QueuedChunk(ChunkCoordIntPair coords, NBTTagCompound compound) {
|
||||
+ this.coords = coords;
|
||||
+ this.compound = compound;
|
||||
+ }
|
||||
+ }
|
||||
+ // Paper end
|
||||
}
|
||||
diff --git a/src/main/java/net/minecraft/server/FileIOThread.java b/src/main/java/net/minecraft/server/FileIOThread.java
|
||||
index 198b00f..d997dd4 100644
|
||||
--- a/src/main/java/net/minecraft/server/FileIOThread.java
|
||||
+++ b/src/main/java/net/minecraft/server/FileIOThread.java
|
||||
@@ -39,11 +39,15 @@ public class FileIOThread implements Runnable {
|
||||
++this.d;
|
||||
}
|
||||
|
||||
- try {
|
||||
- Thread.sleep(this.e ? 0L : 10L);
|
||||
- } catch (InterruptedException interruptedexception) {
|
||||
- interruptedexception.printStackTrace();
|
||||
+ // Paper start - Add toggle
|
||||
+ if (com.destroystokyo.paper.PaperConfig.enableFileIOThreadSleep) {
|
||||
+ try {
|
||||
+ Thread.sleep(this.e ? 0L : 10L);
|
||||
+ } catch (InterruptedException interruptedexception) {
|
||||
+ interruptedexception.printStackTrace();
|
||||
+ }
|
||||
}
|
||||
+ // Paper end
|
||||
}
|
||||
|
||||
if (this.b.isEmpty()) {
|
||||
--
|
||||
2.7.2
|
||||
|
||||
In neuem Issue referenzieren
Einen Benutzer sperren