Paper/CraftBukkit-Patches/0017-Improved-Timings-System.patch

From 9808bdb02bc1e375a8f809a3b8b553104b242daa Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 10 Jan 2013 00:18:11 -0500
Subject: [PATCH] Improved Timings System

Tracks nearly every point of minecraft internals and plugin events to give a good quick overview on what is causing TPS loss.
---
 .../net/minecraft/server/ChunkProviderServer.java  |   2 +
 src/main/java/net/minecraft/server/Entity.java     |   5 +
 .../java/net/minecraft/server/EntityLiving.java    |  10 ++
 .../java/net/minecraft/server/MinecraftServer.java |  17 +++-
 .../net/minecraft/server/PlayerConnection.java     |   5 +
 src/main/java/net/minecraft/server/TileEntity.java |   2 +
 src/main/java/net/minecraft/server/World.java      |  17 ++++
 .../java/net/minecraft/server/WorldServer.java     |   4 +
 .../java/org/bukkit/craftbukkit/SpigotTimings.java | 111 +++++++++++++++++++++
 .../bukkit/craftbukkit/scheduler/CraftTask.java    |  18 ++++
 10 files changed, 190 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/org/bukkit/craftbukkit/SpigotTimings.java

diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index c0bab0f..5772932 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -103,6 +103,7 @@ public class ChunkProviderServer implements IChunkProvider {
         // CraftBukkit end
 
         if (chunk == null) {
+            org.bukkit.craftbukkit.SpigotTimings.syncChunkLoadTimer.startTiming(); // Spigot
             chunk = this.loadChunk(i, j);
             if (chunk == null) {
                 if (this.chunkProvider == null) {
@@ -141,6 +142,7 @@ public class ChunkProviderServer implements IChunkProvider {
             // CraftBukkit end
 
             chunk.a(this, this, i, j);
+            org.bukkit.craftbukkit.SpigotTimings.syncChunkLoadTimer.stopTiming(); // Spigot
         }
 
         // CraftBukkit start - If we didn't need to load the chunk run the callback now
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index d0a58f8..bf9108a 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -15,6 +15,7 @@ import org.bukkit.block.BlockFace;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Painting;
 import org.bukkit.entity.Vehicle;
+import org.bukkit.CustomTimingsHandler; // Spigot
 import org.bukkit.event.entity.EntityCombustByEntityEvent;
 import org.bukkit.event.painting.PaintingBreakByEntityEvent;
 import org.bukkit.event.vehicle.VehicleBlockCollisionEvent;
@@ -111,6 +112,8 @@ public abstract class Entity {
     public UUID uniqueId = UUID.randomUUID(); // CraftBukkit
     public boolean valid = false; // CraftBukkit
 
+    public CustomTimingsHandler tickTimer = org.bukkit.craftbukkit.SpigotTimings.getEntityTimings(this); // Spigot
+
     public Entity(World world) {
         this.id = entityCount++;
         this.l = 1.0D;
@@ -424,6 +427,7 @@ public abstract class Entity {
 
     public void move(double d0, double d1, double d2) {
         if (d0 == 0 && d1 == 0 && d2 == 0) { return; } // Spigot
+        org.bukkit.craftbukkit.SpigotTimings.entityMoveTimer.startTiming(); // Spigot
         if (this.Y) {
             this.boundingBox.d(d0, d1, d2);
             this.locX = (this.boundingBox.a + this.boundingBox.d) / 2.0D;
@@ -729,6 +733,7 @@ public abstract class Entity {
 
             this.world.methodProfiler.b();
         }
+        org.bukkit.craftbukkit.SpigotTimings.entityMoveTimer.stopTiming(); // Spigot
     }
 
     protected void D() {
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index 7d2e633..bd1aeaa 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -505,6 +505,7 @@ public abstract class EntityLiving extends Entity {
     }
 
     public void j_() {
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityBaseTick.startTiming(); // Spigot
         super.j_();
         if (!this.world.isStatic) {
             int i;
@@ -531,7 +532,9 @@ public abstract class EntityLiving extends Entity {
             }
         }
 
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityBaseTick.stopTiming(); // Spigot
         this.c();
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityTickRest.startTiming(); // Spigot
         double d0 = this.locX - this.lastX;
         double d1 = this.locZ - this.lastZ;
         float f = (float) (d0 * d0 + d1 * d1);
@@ -622,6 +625,7 @@ public abstract class EntityLiving extends Entity {
 
         this.world.methodProfiler.b();
         this.aD += f2;
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityTickRest.stopTiming(); // Spigot
     }
 
     // CraftBukkit start - delegate so we can handle providing a reason for health being regained
@@ -1228,6 +1232,7 @@ public abstract class EntityLiving extends Entity {
     }
 
     public void c() {
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityAI.startTiming(); // Spigot
         if (this.bV > 0) {
             --this.bV;
         }
@@ -1279,6 +1284,7 @@ public abstract class EntityLiving extends Entity {
                 this.az = this.yaw;
             }
         }
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityAI.stopTiming(); // Spigot
 
         this.world.methodProfiler.b();
         this.world.methodProfiler.a("jump");
@@ -1297,6 +1303,7 @@ public abstract class EntityLiving extends Entity {
 
         this.world.methodProfiler.b();
         this.world.methodProfiler.a("travel");
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityAIMove.startTiming(); // Spigot
         this.bC *= 0.98F;
         this.bD *= 0.98F;
         this.bE *= 0.9F;
@@ -1305,11 +1312,14 @@ public abstract class EntityLiving extends Entity {
         this.aN *= this.bB();
         this.e(this.bC, this.bD);
         this.aN = f;
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityAIMove.stopTiming(); // Spigot
         this.world.methodProfiler.b();
         this.world.methodProfiler.a("push");
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityAICollision.startTiming(); // Spigot
         if (!this.world.isStatic) {
             this.bd();
         }
+        org.bukkit.craftbukkit.SpigotTimings.timerEntityAICollision.stopTiming(); // Spigot
 
         this.world.methodProfiler.b();
         this.world.methodProfiler.a("looting");
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 128016f..aa6a14a 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -6,7 +6,6 @@ import java.security.KeyPair;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Date;
-import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.Callable;
 import java.util.logging.Level;
@@ -21,6 +20,7 @@ import jline.console.ConsoleReader;
 import joptsimple.OptionSet;
 
 import org.bukkit.World.Environment;
+import org.bukkit.craftbukkit.SpigotTimings; // Spigot
 import org.bukkit.craftbukkit.util.Waitable;
 import org.bukkit.event.server.RemoteServerCommandEvent;
 import org.bukkit.event.world.WorldSaveEvent;
@@ -417,7 +417,10 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo
                     currentTPS = (currentTPS * 0.95) + (1E9 / (curTime - lastTick) * 0.05);
                     lastTick = curTime;
                     MinecraftServer.currentTick++;
+                    SpigotTimings.serverTickTimer.startTiming();
                     this.q();
+                    SpigotTimings.serverTickTimer.stopTiming();
+                    org.bukkit.CustomTimingsHandler.tick();
                 }
                 // Spigot end
             } else {
@@ -517,6 +520,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo
         this.methodProfiler.a("levels");
 
         // CraftBukkit start - only send timeupdates to the people in that world
+        SpigotTimings.schedulerTimer.startTiming(); // Spigot
         this.server.getScheduler().mainThreadHeartbeat(this.ticks);
 
         // Run tasks that are waiting on processing
@@ -524,7 +528,10 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo
             processQueue.remove().run();
         }
 
+        SpigotTimings.schedulerTimer.stopTiming(); // Spigot
+        SpigotTimings.chunkIOTickTimer.startTiming(); // Spigot
         org.bukkit.craftbukkit.chunkio.ChunkIOExecutor.tick();
+        SpigotTimings.chunkIOTickTimer.stopTiming(); // Spigot
 
         // Send timeupdates to everyone, it will get the right time from the world the player is in.
         if (this.ticks % 20 == 0) {
@@ -576,7 +583,9 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo
 
                 this.methodProfiler.b();
                 this.methodProfiler.a("tracker");
+                worldserver.timings.tracker.startTiming(); // Spigot
                 worldserver.getTracker().updatePlayers();
+                worldserver.timings.tracker.stopTiming(); // Spigot
                 this.methodProfiler.b();
                 this.methodProfiler.b();
             // } // CraftBukkit
@@ -585,14 +594,20 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo
         }
 
         this.methodProfiler.c("connection");
+        SpigotTimings.connectionTimer.startTiming(); // Spigot
         this.ae().b();
+        SpigotTimings.connectionTimer.stopTiming(); // Spigot
         this.methodProfiler.c("players");
+        SpigotTimings.playerListTimer.startTiming(); // Spigot
         this.t.tick();
+        SpigotTimings.playerListTimer.stopTiming(); // Spigot
         this.methodProfiler.c("tickables");
 
+        SpigotTimings.tickablesTimer.startTiming(); // Spigot
         for (i = 0; i < this.p.size(); ++i) {
             ((IUpdatePlayerListBox) this.p.get(i)).a();
         }
+        SpigotTimings.tickablesTimer.stopTiming(); // Spigot
 
         this.methodProfiler.b();
     }
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 43a24f5..d2c2305 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -976,6 +976,7 @@ public class PlayerConnection extends Connection {
     // CraftBukkit end
 
     private void handleCommand(String s) {
+        org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.startTiming(); // Spigot
         // CraftBukkit start
         CraftPlayer player = this.getPlayer();
 
@@ -983,19 +984,23 @@ public class PlayerConnection extends Connection {
         this.server.getPluginManager().callEvent(event);
 
         if (event.isCancelled()) {
+            org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.stopTiming(); // Spigot
             return;
         }
 
         try {
             if (server.logCommands) logger.info(event.getPlayer().getName() + " issued server command: " + event.getMessage()); // Spigot
             if (this.server.dispatchCommand(event.getPlayer(), event.getMessage().substring(1))) {
+                org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.stopTiming(); // Spigot
                 return;
             }
         } catch (org.bukkit.command.CommandException ex) {
             player.sendMessage(org.bukkit.ChatColor.RED + "An internal error occurred while attempting to perform this command");
             Logger.getLogger(PlayerConnection.class.getName()).log(Level.SEVERE, null, ex);
+            org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.stopTiming(); // Spigot
             return;
         }
+        org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.stopTiming(); // Spigot
         // CraftBukkit end
 
         /* CraftBukkit start - No longer needed as we have already handled it in server.dispatchServerCommand above.
diff --git a/src/main/java/net/minecraft/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
index d8eb6b9..b6b0d5f 100644
--- a/src/main/java/net/minecraft/server/TileEntity.java
+++ b/src/main/java/net/minecraft/server/TileEntity.java
@@ -4,10 +4,12 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.Callable;
 
+import org.bukkit.CustomTimingsHandler; // Spigot
 import org.bukkit.inventory.InventoryHolder; // CraftBukkit
 
 public class TileEntity {
 
+    public CustomTimingsHandler tickTimer = org.bukkit.craftbukkit.SpigotTimings.getTileEntityTimings(this); // Spigot
     private static Map a = new HashMap();
     private static Map b = new HashMap();
     public World world; // CraftBukkit - protected -> public
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 41f4f31..ec1a08f 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -13,6 +13,7 @@ import java.util.concurrent.Callable;
 // CraftBukkit start
 import org.bukkit.Bukkit;
 import org.bukkit.craftbukkit.util.LongHashSet;
+import org.bukkit.craftbukkit.SpigotTimings; // Spigot
 import org.bukkit.craftbukkit.util.UnsafeList;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.craftbukkit.CraftServer;
@@ -114,6 +115,8 @@ public abstract class World implements IBlockAccess {
     final Object chunkLock = new Object();
     private byte chunkTickRadius;
 
+    public final SpigotTimings.WorldTimingsHandler timings; // Spigot
+
     public CraftWorld getWorld() {
         return this.world;
     }
@@ -193,6 +196,7 @@ public abstract class World implements IBlockAccess {
         this.a();
 
         this.getServer().addWorld(this.world); // CraftBukkit
+        timings = new SpigotTimings.WorldTimingsHandler(this); // Spigot
     }
 
     protected abstract IChunkProvider j();
@@ -1259,6 +1263,7 @@ public abstract class World implements IBlockAccess {
         this.f.clear();
         this.methodProfiler.c("regular");
 
+        timings.entityTick.startTiming(); // Spigot
         for (i = 0; i < this.entityList.size(); ++i) {
             entity = (Entity) this.entityList.get(i);
 
@@ -1281,7 +1286,9 @@ public abstract class World implements IBlockAccess {
             this.methodProfiler.a("tick");
             if (!entity.dead) {
                 try {
+                    SpigotTimings.tickEntityTimer.startTiming(); // Spigot
                     this.playerJoinedWorld(entity);
+                    SpigotTimings.tickEntityTimer.stopTiming(); // Spigot
                 } catch (Throwable throwable1) {
                     crashreport = CrashReport.a(throwable1, "Ticking entity");
                     crashreportsystemdetails = crashreport.a("Entity being ticked");
@@ -1311,7 +1318,9 @@ public abstract class World implements IBlockAccess {
             this.methodProfiler.b();
         }
 
+        timings.entityTick.stopTiming(); // Spigot
         this.methodProfiler.c("tileEntities");
+        timings.tileEntityTick.startTiming(); // Spigot
         this.M = true;
         Iterator iterator = this.tileEntityList.iterator();
 
@@ -1326,8 +1335,11 @@ public abstract class World implements IBlockAccess {
 
             if (!tileentity.r() && tileentity.o() && this.isLoaded(tileentity.x, tileentity.y, tileentity.z)) {
                 try {
+                    tileentity.tickTimer.startTiming(); // Spigot
                     tileentity.g();
+                    tileentity.tickTimer.stopTiming(); // Spigot
                 } catch (Throwable throwable2) {
+                    tileentity.tickTimer.stopTiming(); // Spigot
                     crashreport = CrashReport.a(throwable2, "Ticking tile entity");
                     crashreportsystemdetails = crashreport.a("Tile entity being ticked");
                     if (tileentity == null) {
@@ -1352,6 +1364,8 @@ public abstract class World implements IBlockAccess {
             }
         }
 
+        timings.tileEntityTick.stopTiming(); // Spigot
+        timings.tileEntityPending.startTiming(); // Spigot
         this.M = false;
         if (!this.b.isEmpty()) {
             this.tileEntityList.removeAll(this.b);
@@ -1390,6 +1404,7 @@ public abstract class World implements IBlockAccess {
             this.a.clear();
         }
 
+        timings.tileEntityPending.stopTiming(); // Spigot
         this.methodProfiler.b();
         this.methodProfiler.b();
     }
@@ -1412,6 +1427,7 @@ public abstract class World implements IBlockAccess {
         byte b0 = 32;
 
         if (!flag || this.d(i - b0, 0, j - b0, i + b0, 0, j + b0)) {
+            entity.tickTimer.startTiming(); // Spigot
             entity.T = entity.locX;
             entity.U = entity.locY;
             entity.V = entity.locZ;
@@ -1473,6 +1489,7 @@ public abstract class World implements IBlockAccess {
                     entity.passenger = null;
                 }
             }
+            entity.tickTimer.stopTiming(); // Spigot
         }
     }
 
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 4aa2a19..6cb3e24 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -157,9 +157,12 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
         // CraftBukkit start - Only call spawner if we have players online and the world allows for mobs or animals
         long time = this.worldData.getTime();
         if (this.getGameRules().getBoolean("doMobSpawning") && (this.allowMonsters || this.allowAnimals) && (this instanceof WorldServer && this.players.size() > 0)) {
+            timings.mobSpawn.startTiming(); // Spigot
             SpawnerCreature.spawnEntities(this, this.allowMonsters && (this.ticksPerMonsterSpawns != 0 && time % this.ticksPerMonsterSpawns == 0L), this.allowAnimals && (this.ticksPerAnimalSpawns != 0 && time % this.ticksPerAnimalSpawns == 0L), this.worldData.getTime() % 400L == 0L);
+            timings.mobSpawn.stopTiming(); // Spigot
         }
         // CraftBukkit end
+        timings.doTickRest.startTiming(); // Spigot
         this.methodProfiler.c("chunkSource");
         this.chunkProvider.unloadChunks();
         int j = this.a(1.0F);
@@ -186,6 +189,7 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
         this.V();
 
         this.getWorld().processChunkGC(); // CraftBukkit
+        timings.doTickRest.stopTiming(); // Spigot
     }
 
     public BiomeMeta a(EnumCreatureType enumcreaturetype, int i, int j, int k) {
diff --git a/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java b/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java
new file mode 100644
index 0000000..dec3110
--- /dev/null
+++ b/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java
@@ -0,0 +1,111 @@
+package org.bukkit.craftbukkit;
+
+import net.minecraft.server.*;
+import org.bukkit.CustomTimingsHandler;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.scheduler.BukkitTask;
+
+import java.util.HashMap;
+
+public class SpigotTimings {
+
+    public static final CustomTimingsHandler serverTickTimer = new CustomTimingsHandler("** Full Server Tick");
+    public static final CustomTimingsHandler playerListTimer = new CustomTimingsHandler("Player List");
+    public static final CustomTimingsHandler connectionTimer = new CustomTimingsHandler("Connection");
+    public static final CustomTimingsHandler tickablesTimer = new CustomTimingsHandler("Tickables");
+    public static final CustomTimingsHandler schedulerTimer = new CustomTimingsHandler("Scheduler");
+    public static final CustomTimingsHandler chunkIOTickTimer = new CustomTimingsHandler("ChunkIOTick");
+    public static final CustomTimingsHandler syncChunkLoadTimer = new CustomTimingsHandler("syncChunkLoad");
+
+    public static final CustomTimingsHandler entityMoveTimer = new CustomTimingsHandler("** entityMove");
+    public static final CustomTimingsHandler tickEntityTimer = new CustomTimingsHandler("** tickEntity");
+    public static final CustomTimingsHandler activatedEntityTimer = new CustomTimingsHandler("** activatedTickEntity");
+    public static final CustomTimingsHandler tickTileEntityTimer = new CustomTimingsHandler("** tickTileEntity");
+
+    public static final CustomTimingsHandler timerEntityBaseTick = new CustomTimingsHandler("** livingEntityBaseTick");
+    public static final CustomTimingsHandler timerEntityAI = new CustomTimingsHandler("** livingEntityAI");
+    public static final CustomTimingsHandler timerEntityAICollision = new CustomTimingsHandler("** livingEntityAICollision");
+    public static final CustomTimingsHandler timerEntityAIMove = new CustomTimingsHandler("** livingEntityAIMove");
+    public static final CustomTimingsHandler timerEntityTickRest = new CustomTimingsHandler("** livingEntityTickRest");
+
+    public static final CustomTimingsHandler playerCommandTimer = new CustomTimingsHandler("** playerCommand");
+
+    public static final HashMap<String, CustomTimingsHandler> entityTypeTimingMap = new HashMap<String, CustomTimingsHandler>();
+    public static final HashMap<String, CustomTimingsHandler> tileEntityTypeTimingMap = new HashMap<String, CustomTimingsHandler>();
+    public static final HashMap<String, CustomTimingsHandler> pluginTaskTimingMap = new HashMap<String, CustomTimingsHandler>();
+
+    /**
+     * Gets a timer associated with a plugins tasks.
+     * @param task
+     * @param period
+     * @return
+     */
+    public static CustomTimingsHandler getPluginTaskTimings(BukkitTask task, long period) {
+        String plugin = task.getOwner().getDescription().getFullName();
+        String name = "Task: " + plugin +" Id:";
+        if (period > 0) {
+            name += "(interval:" + period +")";
+        } else {
+            name += "(Single)";
+        }
+        CustomTimingsHandler result = pluginTaskTimingMap.get(name);
+        if (result == null) {
+            result = new CustomTimingsHandler(name);
+            pluginTaskTimingMap.put(name, result);
+        }
+        return result;
+    }
+
+    /**
+     * Get a named timer for the specified entity type to track type specific timings.
+     * @param entity
+     * @return
+     */
+    public static CustomTimingsHandler getEntityTimings(Entity entity) {
+        String entityType = entity.getClass().getSimpleName();
+        CustomTimingsHandler result = entityTypeTimingMap.get(entityType);
+        if (result == null) {
+            result = new CustomTimingsHandler("** tickEntity - " + entityType, activatedEntityTimer);
+            entityTypeTimingMap.put(entityType, result);
+        }
+        return result;
+    }
+
+    /**
+     * Get a named timer for the specified tile entity type to track type specific timings.
+     * @param entity
+     * @return
+     */
+    public static CustomTimingsHandler getTileEntityTimings(TileEntity entity) {
+        String entityType = entity.getClass().getSimpleName();
+        CustomTimingsHandler result = tileEntityTypeTimingMap.get(entityType);
+        if (result == null) {
+            result = new CustomTimingsHandler("** tickTileEntity - " + entityType, tickTileEntityTimer);
+            tileEntityTypeTimingMap.put(entityType, result);
+        }
+        return result;
+    }
+
+    /**
+     * Set of timers per world, to track world specific timings.
+     */
+    public static class WorldTimingsHandler {
+        public final CustomTimingsHandler mobSpawn;
+        public final CustomTimingsHandler doTickRest;
+        public final CustomTimingsHandler entityTick;
+        public final CustomTimingsHandler tileEntityTick;
+        public final CustomTimingsHandler tileEntityPending;
+        public final CustomTimingsHandler tracker;
+
+        public WorldTimingsHandler(World server) {
+            String name = server.worldData.getName() +" - ";
+
+            mobSpawn = new CustomTimingsHandler(name + "mobSpawn");
+            doTickRest = new CustomTimingsHandler(name + "doTickRest");
+            entityTick = new CustomTimingsHandler(name + "entityTick");
+            tileEntityTick = new CustomTimingsHandler(name + "tileEntityTick");
+            tileEntityPending = new CustomTimingsHandler(name + "tileEntityPending");
+            tracker = new CustomTimingsHandler(name + "tracker");
+        }
+    }
+}
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
index 55db3ff..df134e3 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
@@ -1,6 +1,8 @@
 package org.bukkit.craftbukkit.scheduler;
 
 import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.SpigotTimings; // Spigot
+import org.bukkit.CustomTimingsHandler; // Spigot
 import org.bukkit.plugin.Plugin;
 import org.bukkit.scheduler.BukkitTask;
 
@@ -22,6 +24,7 @@ class CraftTask implements BukkitTask, Runnable {
     private final Plugin plugin;
     private final int id;
 
+    CustomTimingsHandler timings = null; // Spigot
     CraftTask() {
         this(null, null, -1, -1);
     }
@@ -50,7 +53,22 @@ class CraftTask implements BukkitTask, Runnable {
     }
 
     public void run() {
+        // Spigot start - Wrap custom timings on Tasks
+        if (!Bukkit.getServer().getPluginManager().useTimings()) {
+            task.run();
+            return;
+        }
+        if (timings == null && this.getOwner() != null && this.isSync()) {
+            timings = SpigotTimings.getPluginTaskTimings(this, period);
+        }
+        if (timings != null) {
+            timings.startTiming();
+        }
         task.run();
+        if (timings != null) {
+            timings.stopTiming();
+        }
+        // Spigot end
     }
 
     long getPeriod() {
-- 
1.8.1.1