mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-05 10:20:53 +01:00
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
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Sat, 29 Aug 2015 17:48:20 -0400
|
|
Subject: [PATCH] More effecient RegionFile zero'ing
|
|
|
|
Speeds up new Chunk Generation by using 2 4k block writes vs 2048 4 byte writes
|
|
more effecient than going in and out of native calls repeatedly.
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
|
|
index fe3fbb0..348706f 100644
|
|
--- a/src/main/java/net/minecraft/server/RegionFile.java
|
|
+++ b/src/main/java/net/minecraft/server/RegionFile.java
|
|
@@ -16,7 +16,7 @@ import java.util.zip.InflaterInputStream;
|
|
|
|
public class RegionFile {
|
|
|
|
- private static final byte[] a = new byte[4096];
|
|
+ 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
|
|
private final File b;
|
|
private RandomAccessFile c;
|
|
private final int[] d = new int[1024];
|
|
@@ -38,13 +38,9 @@ public class RegionFile {
|
|
int i;
|
|
|
|
if (this.c.length() < 4096L) {
|
|
- for (i = 0; i < 1024; ++i) {
|
|
- this.c.writeInt(0);
|
|
- }
|
|
-
|
|
- for (i = 0; i < 1024; ++i) {
|
|
- this.c.writeInt(0);
|
|
- }
|
|
+ // Spigot - more effecient chunk zero'ing
|
|
+ this.c.write(RegionFile.a); // Spigot
|
|
+ this.c.write(RegionFile.a); // Spigot
|
|
|
|
this.g += 8192;
|
|
}
|
|
--
|
|
1.9.1
|
|
|