c95273f973
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.
42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
From 0fe6a5f1ec7f039ee04368f5d974286b08ddb53f 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 17:48:20 -0400
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Subject: [PATCH] More effecient RegionFile zero'ing
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Speeds up new Chunk Generation by using 2 4k block writes vs 2048 4 byte writes
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more effecient than going in and out of native calls repeatedly.
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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 fe3fbb0..348706f 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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@@ -16,7 +16,7 @@ import java.util.zip.InflaterInputStream;
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public class RegionFile {
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- private static final byte[] a = new byte[4096];
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+ private static final byte[] a = new byte[4096]; // Spigot - note: if this ever changes to not be 4096 bytes, update constructor! // PAIL: empty 4k block
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private final File b;
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private RandomAccessFile c;
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private final int[] d = new int[1024];
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@@ -38,13 +38,9 @@ public class RegionFile {
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int i;
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if (this.c.length() < 4096L) {
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- for (i = 0; i < 1024; ++i) {
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- this.c.writeInt(0);
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- }
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-
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- for (i = 0; i < 1024; ++i) {
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- this.c.writeInt(0);
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- }
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+ // Spigot - more effecient chunk zero'ing
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+ this.c.write(RegionFile.a); // Spigot
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+ this.c.write(RegionFile.a); // Spigot
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this.g += 8192;
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}
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--
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1.9.1
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