From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mykyta Komarnytskyy <nkomarn@hotmail.com>
Date: Sat, 24 Oct 2020 21:03:53 -0500
Subject: [PATCH] Smarter statistics ticking

In vanilla, statistics that count time spent for an action (i.e. time played or sneak time) are incremented every tick. This is retarded. With this patch and a configured interval of 20, the statistics are only ticked every 20th tick and are incremented by 20 ticks at a time. This means a lot less ticking with the same accurate counting.
With an interval of 20, this patch saves roughly 3ms per tick on a server w/ 80 players online.

Original code by YatopiaMC, licensed under MIT
You can find the original code on https://github.com/YatopiaMC/Yatopia

diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
index 5a482f4c2a86d3f93fbbe8fc8fd29b07ebd50dc8..0b50301046234551c51b5ea9add450b6310ca73a 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -308,19 +308,21 @@ public abstract class Player extends LivingEntity {
         this.moveCloak();
         if (!this.level.isClientSide) {
             this.foodData.tick(this);
-            this.awardStat(Stats.PLAY_TIME);
-            this.awardStat(Stats.TOTAL_WORLD_TIME);
-            if (this.isAlive()) {
-                this.awardStat(Stats.TIME_SINCE_DEATH);
-            }
-
-            if (this.isDiscrete()) {
-                this.awardStat(Stats.CROUCH_TIME);
-            }
-
-            if (!this.isSleeping()) {
-                this.awardStat(Stats.TIME_SINCE_REST);
+            // Mirai start
+            if (tickCount % 20 == 0) {
+                this.awardStat(Stats.PLAY_TIME, 20);
+                this.awardStat(Stats.TOTAL_WORLD_TIME, 20);
+                if (this.isAlive()) {
+                    this.awardStat(Stats.TIME_SINCE_DEATH, 20);
+                }
+                if (this.isDiscrete()) {
+                    this.awardStat(Stats.CROUCH_TIME, 20);
+                }
+                if (!this.isSleeping()) {
+                    this.awardStat(Stats.TIME_SINCE_REST, 20);
+                }
             }
+            // Mirai end
         }
 
         int i = 29999999;