papermc/CraftBukkit-Patches/0031-Faster-UUID-for-entities.patch

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From 305ee8ef5336221e1a6948bbb5a1b28d53b781d8 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sun, 17 Mar 2013 19:02:50 +1100
Subject: [PATCH] Faster UUID for entities
It is overkill to create a new SecureRandom on each entity create and then use it to make a new Entity ID for every entity instance created. Instead we will just use a pseudo random UUID based off the random instance we already have.
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 401edcc..a2a4f5a 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -154,7 +154,7 @@ public abstract class Entity {
this.ai = false;
this.as = 0;
this.invulnerable = false;
- this.uniqueID = UUID.randomUUID();
+ this.uniqueID = new UUID(random.nextLong(), random.nextLong()); // Spigot
this.at = EnumEntitySize.SIZE_2;
this.world = world;
this.setPosition(0.0D, 0.0D, 0.0D);
--
1.8.1.2