From 19fab5f746af8326b585e65c5357955896a345f4 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Mon, 13 Apr 2015 15:47:15 -0500
Subject: [PATCH] Fix redstone lag issues


diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 261c86c..e34e7fd 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -611,6 +611,8 @@ public class WorldServer extends World implements IAsyncTaskHandler {
             if (false) { // CraftBukkit
                 throw new IllegalStateException("TickNextTick list out of synch");
             } else {
+                // PaperSpigot start - No, stop doing this, it affects things like redstone
+                /*
                 if (i > 1000) {
                     // CraftBukkit start - If the server has too much to process over time, try to alleviate that
                     if (i > 20 * 1000) {
@@ -619,7 +621,11 @@ public class WorldServer extends World implements IAsyncTaskHandler {
                         i = 1000;
                     }
                     // CraftBukkit end
+                */
+                if (i > paperSpigotConfig.tickNextTickCap) {
+                    i = paperSpigotConfig.tickNextTickCap;
                 }
+                // PaperSpigot end
 
                 this.methodProfiler.a("cleaning");
 
diff --git a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
index 1915a7c..fa4a7d7 100644
--- a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
+++ b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
@@ -223,4 +223,11 @@ public class PaperSpigotWorldConfig
             System.err.println( "==========================================" );
         }
     }
+
+    public int tickNextTickCap;
+    private void tickNextTickCap()
+    {
+        tickNextTickCap = getInt( "tick-next-tick-list-cap", 10000 ); // Higher values will be friendlier to vanilla style mechanics (to a point) but may hurt performance
+        log( "WorldServer TickNextTick cap set at " + tickNextTickCap );
+    }
 }
-- 
2.3.5