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Minecraft ineffeciently uses OutputStreams by calling .write(int) on the stream. For Chunks, this is a DeflaterOutputStream, which allocates a single byte EVERY write. This is causing the server to allocate tons of new byte[1] objects. Additionally, this is very ineffecient for the Deflate process. By Buffering Writes the same way it already is Buffering Reads, we will write to the stream much more effeciently. Also a more effecient RegionFile zero'ing for new chunks to speed up new chunk generation.
34 Zeilen
1.5 KiB
Diff
34 Zeilen
1.5 KiB
Diff
From bec646b094570475d33dac9381e03b8ce6ba4286 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 29 Aug 2015 13:59:25 -0400
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Subject: [PATCH] Optimize Chunk Saving Memory Allocation and Compression
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Minecraft ineffeciently uses OutputStreams by calling .write(int) on the stream.
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For Chunks, this is a DeflaterOutputStream, which allocates a single byte EVERY write.
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This is causing the server to allocate tons of new byte[1] objects.
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Additionally, this is very ineffecient for the Deflate process.
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By Buffering Writes the same way it already is Buffering Reads, we will
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write to the stream much more effeciently.
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diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
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index 3e31f4b..fe3fbb0 100644
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--- a/src/main/java/net/minecraft/server/RegionFile.java
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+++ b/src/main/java/net/minecraft/server/RegionFile.java
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@@ -176,8 +176,9 @@ public class RegionFile {
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}
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}
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- public DataOutputStream b(int i, int j) {
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- return this.d(i, j) ? null : new DataOutputStream(new DeflaterOutputStream(new RegionFile.ChunkBuffer(i, j)));
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+ public DataOutputStream b(int i, int j) { // PAIL: getChunkOutputStream
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+ // PAIL: isInvalidRegion
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+ return this.d(i, j) ? null : new DataOutputStream(new java.io.BufferedOutputStream(new DeflaterOutputStream(new RegionFile.ChunkBuffer(i, j)))); // Spigot - use a BufferedOutputStream to greatly improve file write performance
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}
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protected synchronized void a(int i, int j, byte[] abyte, int k) {
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--
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1.9.1
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