From 2d53aa2c84c4fed063659a26e9bcb90d546a5ae8 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 22 Jul 2018 21:21:41 -0400
Subject: [PATCH] Don't save Proto Chunks

These chunks are unfinished, and waste cpu time saving these unfinished chunks.
the loadChunk method refuses to acknoledge they exists, and will restart
a new chunk generation process to begin with, so saving them serves no benefit.

diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index fd8430a68f..b425704b1a 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -250,7 +250,7 @@ public class ChunkProviderServer implements IChunkProvider {
     public boolean a(boolean flag) {
         int i = 0;
 
-        this.f.a();
+        //this.f.a(); // Paper - don't save proto chunks
         ArrayList arraylist = Lists.newArrayList(this.chunks.values());
         Iterator iterator = arraylist.iterator();
 
@@ -369,7 +369,7 @@ public class ChunkProviderServer implements IChunkProvider {
             }
             // Paper end
 
-            this.f.a();
+            //this.f.a(); // Paper - don't save proto chunks
             this.chunkLoader.b();
         }
 
diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
index ea8684747d..a97e024ec4 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -282,6 +282,7 @@ public class ChunkRegionLoader implements IChunkLoader, IAsyncChunkSaver {
     }
 
     public synchronized void saveChunk(World world, IChunkAccess ichunkaccess, boolean unloaded) throws IOException, ExceptionWorldConflict {
+        if (ichunkaccess.i().d() == ChunkStatus.Type.PROTOCHUNK) { return; } // Paper - don't save proto chunks
         // Spigot end
         world.checkSession();
 
-- 
2.18.0