From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Fri, 26 Jun 2020 22:35:08 -0700
Subject: [PATCH] Hide sync chunk writes behind flag

Syncing writes on each write call has terrible performance
on harddrives.

-DPaper.enable-sync-chunk-writes=true to enable

diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
index b7cf02301c02ed0a6b696384e656426762ae2105..1fab9b9c7d41a0d2a551096c2c15f741a887fa2d 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
@@ -111,7 +111,7 @@ public class DedicatedServerProperties extends PropertyManager<DedicatedServerPr
         this.maxWorldSize = this.a("max-world-size", (integer) -> {
             return MathHelper.clamp(integer, 1, 29999984);
         }, 29999984);
-        this.syncChunkWrites = this.getBoolean("sync-chunk-writes", true);
+        this.syncChunkWrites = this.getBoolean("sync-chunk-writes", true) && Boolean.getBoolean("Paper.enable-sync-chunk-writes"); // Paper - hide behind flag
         this.enableJmxMonitoring = this.getBoolean("enable-jmx-monitoring", false);
         this.enableStatus = this.getBoolean("enable-status", true);
         this.entityBroadcastRangePercentage = this.a("entity-broadcast-range-percentage", (integer) -> {