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This enables us a fast reference to the entities current chunk instead of having to look it up by hashmap lookups. We also store counts by type to further enable other performance optimizations in later patches.
95 lines
4.4 KiB
Diff
95 lines
4.4 KiB
Diff
From 4c7de2e2109d66a5a3911af98b61c1af58e0d8a6 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Fri, 4 Nov 2016 02:12:10 -0400
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Subject: [PATCH] Chunk Save Stats Debug Option
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Adds a command line flag to enable stats on how chunk saves are processing.
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Stats on current queue, how many was processed and how many were queued.
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diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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index 93e938a9d..66ff1adf6 100644
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--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
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+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
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@@ -28,6 +28,11 @@ public class ChunkProviderServer implements IChunkProvider {
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public final Set<Long> unloadQueue = Sets.newHashSet();
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public final ChunkGenerator chunkGenerator;
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private final IChunkLoader chunkLoader;
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+ // Paper start - chunk save stats
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+ private long lastQueuedSaves = 0L; // Paper
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+ private long lastProcessedSaves = 0L; // Paper
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+ private long lastSaveStatPrinted = System.currentTimeMillis();
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+ // Paper end
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// Paper start
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protected Chunk lastChunkByPos = null;
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public Long2ObjectOpenHashMap<Chunk> chunks = new Long2ObjectOpenHashMap<Chunk>(8192) {
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@@ -257,6 +262,30 @@ public class ChunkProviderServer implements IChunkProvider {
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// Paper start
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final ChunkRegionLoader chunkLoader = (ChunkRegionLoader) world.getChunkProviderServer().chunkLoader;
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final int queueSize = chunkLoader.getQueueSize();
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+
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+ final long now = System.currentTimeMillis();
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+ final long timeSince = (now - lastSaveStatPrinted) / 1000;
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+ final Integer printRateSecs = Integer.getInteger("printSaveStats");
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+ if (printRateSecs != null && timeSince >= printRateSecs) {
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+ final String timeStr = "/" + timeSince +"s";
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+ final long queuedSaves = chunkLoader.getQueuedSaves();
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+ long queuedDiff = queuedSaves - lastQueuedSaves;
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+ lastQueuedSaves = queuedSaves;
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+
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+ final long processedSaves = chunkLoader.getProcessedSaves();
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+ long processedDiff = processedSaves - lastProcessedSaves;
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+ lastProcessedSaves = processedSaves;
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+
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+ lastSaveStatPrinted = now;
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+ if (processedDiff > 0 || queueSize > 0 || queuedDiff > 0) {
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+ System.out.println("[Chunk Save Stats] " + world.worldData.getName() +
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+ " - Current: " + queueSize +
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+ " - Queued: " + queuedDiff + timeStr +
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+ " - Processed: " +processedDiff + timeStr
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+ );
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+ }
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+ }
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+
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if (queueSize > world.paperConfig.queueSizeAutoSaveThreshold){
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return false;
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}
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diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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index 77943821e..14f88e91d 100644
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--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
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@@ -39,7 +39,13 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
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this.e = dataconvertermanager;
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}
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- public int getQueueSize() { return queue.size(); } // Paper
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+ // Paper start
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+ private long queuedSaves = 0;
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+ private final java.util.concurrent.atomic.AtomicLong processedSaves = new java.util.concurrent.atomic.AtomicLong(0L);
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+ public int getQueueSize() { return queue.size(); }
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+ public long getQueuedSaves() { return queuedSaves; }
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+ public long getProcessedSaves() { return processedSaves.longValue(); }
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+ // Paper end
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// CraftBukkit start - Add async variant, provide compatibility
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@Nullable
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@@ -163,6 +169,7 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
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synchronized (lock) { // Paper - Chunk queue improvements
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this.b.put(chunkcoordintpair, nbttagcompound);
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}
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+ queuedSaves++; // Paper
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queue.add(new QueuedChunk(chunkcoordintpair, nbttagcompound)); // Paper - Chunk queue improvements
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FileIOThread.a().a(this);
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@@ -187,6 +194,7 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
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return false;
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} else {
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ChunkCoordIntPair chunkcoordintpair = chunk.coords; // Paper - Chunk queue improvements
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+ processedSaves.incrementAndGet(); // Paper
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boolean flag;
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--
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2.18.0
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