Paper/Spigot-Server-Patches/0009-Timings-v2.patch

From a7ea633b747bb806e7fcc6077f30fcab76b59d04 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 3 Mar 2016 04:00:11 -0600
Subject: [PATCH] Timings v2


diff --git a/src/main/java/co/aikar/timings/MinecraftTimings.java b/src/main/java/co/aikar/timings/MinecraftTimings.java
new file mode 100644
index 0000000000..3f9fb6f906
--- /dev/null
+++ b/src/main/java/co/aikar/timings/MinecraftTimings.java
@@ -0,0 +1,133 @@
+package co.aikar.timings;
+
+import com.google.common.collect.MapMaker;
+import net.minecraft.server.*;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.scheduler.BukkitTask;
+
+import org.bukkit.craftbukkit.scheduler.CraftTask;
+
+import java.util.Map;
+
+// TODO: Re-implement missing timers
+public final class MinecraftTimings {
+
+    public static final Timing playerListTimer = Timings.ofSafe("Player List");
+    public static final Timing commandFunctionsTimer = Timings.ofSafe("Command Functions");
+    public static final Timing connectionTimer = Timings.ofSafe("Connection Handler");
+    public static final Timing tickablesTimer = Timings.ofSafe("Tickables");
+    public static final Timing minecraftSchedulerTimer = Timings.ofSafe("Minecraft Scheduler");
+    public static final Timing bukkitSchedulerTimer = Timings.ofSafe("Bukkit Scheduler");
+    public static final Timing bukkitSchedulerPendingTimer = Timings.ofSafe("Bukkit Scheduler - Pending");
+    public static final Timing bukkitSchedulerFinishTimer = Timings.ofSafe("Bukkit Scheduler - Finishing");
+    public static final Timing chunkIOTickTimer = Timings.ofSafe("ChunkIOTick");
+    public static final Timing timeUpdateTimer = Timings.ofSafe("Time Update");
+    public static final Timing serverCommandTimer = Timings.ofSafe("Server Command");
+    public static final Timing savePlayers = Timings.ofSafe("Save Players");
+
+    public static final Timing tickEntityTimer = Timings.ofSafe("## tickEntity");
+    public static final Timing tickTileEntityTimer = Timings.ofSafe("## tickTileEntity");
+    public static final Timing packetProcessTimer = Timings.ofSafe("## Packet Processing");
+    public static final Timing scheduledBlocksTimer = Timings.ofSafe("## Scheduled Blocks");
+    public static final Timing structureGenerationTimer = Timings.ofSafe("Structure Generation");
+
+    public static final Timing processQueueTimer = Timings.ofSafe("processQueue");
+
+    public static final Timing playerCommandTimer = Timings.ofSafe("playerCommand");
+
+    public static final Timing entityActivationCheckTimer = Timings.ofSafe("entityActivationCheck");
+
+    public static final Timing antiXrayUpdateTimer = Timings.ofSafe("anti-xray - update");
+    public static final Timing antiXrayObfuscateTimer = Timings.ofSafe("anti-xray - obfuscate");
+
+    private static final Map<Class<?>, String> taskNameCache = new MapMaker().weakKeys().makeMap();
+
+    private MinecraftTimings() {}
+
+    /**
+     * Gets a timer associated with a plugins tasks.
+     * @param bukkitTask
+     * @param period
+     * @return
+     */
+    public static Timing getPluginTaskTimings(BukkitTask bukkitTask, long period) {
+        if (!bukkitTask.isSync()) {
+            return NullTimingHandler.NULL;
+        }
+        Plugin plugin;
+
+        CraftTask craftTask = (CraftTask) bukkitTask;
+
+        final Class<?> taskClass = craftTask.getTaskClass();
+        if (bukkitTask.getOwner() != null) {
+            plugin = bukkitTask.getOwner();
+        } else {
+            plugin = TimingsManager.getPluginByClassloader(taskClass);
+        }
+
+        final String taskname = taskNameCache.computeIfAbsent(taskClass, clazz ->
+                clazz.isAnonymousClass() || clazz.isLocalClass()
+                        ? clazz.getName()
+                        : clazz.getCanonicalName());
+
+        StringBuilder name = new StringBuilder(64);
+        name.append("Task: ").append(taskname);
+        if (period > 0) {
+            name.append(" (interval:").append(period).append(")");
+        } else {
+            name.append(" (Single)");
+        }
+
+        if (plugin == null) {
+            return Timings.ofSafe(null, name.toString());
+        }
+
+        return Timings.ofSafe(plugin, name.toString());
+    }
+
+    /**
+     * Get a named timer for the specified entity type to track type specific timings.
+     * @param entity
+     * @return
+     */
+    public static Timing getEntityTimings(Entity entity) {
+        String entityType = entity.getClass().getName();
+        return Timings.ofSafe("Minecraft", "## tickEntity - " + entityType, tickEntityTimer);
+    }
+
+    /**
+     * Get a named timer for the specified tile entity type to track type specific timings.
+     * @param entity
+     * @return
+     */
+    public static Timing getTileEntityTimings(TileEntity entity) {
+        String entityType = entity.getClass().getName();
+        return Timings.ofSafe("Minecraft", "## tickTileEntity - " + entityType, tickTileEntityTimer);
+    }
+    public static Timing getCancelTasksTimer() {
+        return Timings.ofSafe("Cancel Tasks");
+    }
+    public static Timing getCancelTasksTimer(Plugin plugin) {
+        return Timings.ofSafe(plugin, "Cancel Tasks");
+    }
+
+    public static void stopServer() {
+        TimingsManager.stopServer();
+    }
+
+    public static Timing getBlockTiming(Block block) {
+        return Timings.ofSafe("## Scheduled Block: " + block.toString(), scheduledBlocksTimer);
+    }
+/*
+    public static Timing getStructureTiming(StructureGenerator structureGenerator) {
+        return Timings.ofSafe("Structure Generator - " + structureGenerator.getName(), structureGenerationTimer);
+    }*/
+
+    public static Timing getPacketTiming(Packet packet) {
+        return Timings.ofSafe("## Packet - " + packet.getClass().getSimpleName(), packetProcessTimer);
+    }
+
+    public static Timing getCommandFunctionTiming(CustomFunction function) {
+        return Timings.ofSafe("Command Function - " + function.getMinecraftKey().toString());
+    }
+}
diff --git a/src/main/java/co/aikar/timings/WorldTimingsHandler.java b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
new file mode 100644
index 0000000000..d5d3b2a20c
--- /dev/null
+++ b/src/main/java/co/aikar/timings/WorldTimingsHandler.java
@@ -0,0 +1,105 @@
+package co.aikar.timings;
+
+import net.minecraft.server.World;
+import net.minecraft.server.WorldServer;
+
+/**
+ * Set of timers per world, to track world specific timings.
+ */
+// TODO: Re-implement missing timers
+public class WorldTimingsHandler {
+    public final Timing mobSpawn;
+    public final Timing doChunkUnload;
+    public final Timing doPortalForcer;
+    public final Timing scheduledBlocks;
+    public final Timing scheduledBlocksCleanup;
+    public final Timing scheduledBlocksTicking;
+    public final Timing chunkTicks;
+    public final Timing lightChunk;
+    public final Timing chunkTicksBlocks;
+    public final Timing doVillages;
+    public final Timing doChunkMap;
+    public final Timing doChunkMapUpdate;
+    public final Timing doChunkMapToUpdate;
+    public final Timing doChunkMapSortMissing;
+    public final Timing doChunkMapSortSendToPlayers;
+    public final Timing doChunkMapPlayersNeedingChunks;
+    public final Timing doChunkMapPendingSendToPlayers;
+    public final Timing doChunkMapUnloadChunks;
+    public final Timing doChunkGC;
+    public final Timing doSounds;
+    public final Timing entityRemoval;
+    public final Timing entityTick;
+    public final Timing tileEntityTick;
+    public final Timing tileEntityPending;
+    public final Timing tracker1;
+    public final Timing tracker2;
+    public final Timing doTick;
+    public final Timing tickEntities;
+
+    public final Timing syncChunkLoadTimer;
+    public final Timing syncChunkLoadDataTimer;
+    public final Timing syncChunkLoadStructuresTimer;
+    public final Timing syncChunkLoadPostTimer;
+    public final Timing syncChunkLoadPopulateTimer;
+    public final Timing chunkLoadLevelTimer;
+    public final Timing chunkGeneration;
+    public final Timing chunkIOStage1;
+    public final Timing chunkIOStage2;
+    public final Timing worldSave;
+    public final Timing worldSaveChunks;
+    public final Timing worldSaveLevel;
+    public final Timing chunkSaveData;
+
+    public WorldTimingsHandler(World server) {
+        String name = server.worldData.getName() +" - ";
+
+        mobSpawn = Timings.ofSafe(name + "mobSpawn");
+        doChunkUnload = Timings.ofSafe(name + "doChunkUnload");
+        scheduledBlocks = Timings.ofSafe(name + "Scheduled Blocks");
+        scheduledBlocksCleanup = Timings.ofSafe(name + "Scheduled Blocks - Cleanup");
+        scheduledBlocksTicking = Timings.ofSafe(name + "Scheduled Blocks - Ticking");
+        chunkTicks = Timings.ofSafe(name + "Chunk Ticks");
+        lightChunk = Timings.ofSafe(name + "Light Chunk");
+        chunkTicksBlocks = Timings.ofSafe(name + "Chunk Ticks - Blocks");
+        doVillages = Timings.ofSafe(name + "doVillages");
+        doChunkMap = Timings.ofSafe(name + "doChunkMap");
+        doChunkMapUpdate = Timings.ofSafe(name + "doChunkMap - Update");
+        doChunkMapToUpdate = Timings.ofSafe(name + "doChunkMap - To Update");
+        doChunkMapSortMissing = Timings.ofSafe(name + "doChunkMap - Sort Missing");
+        doChunkMapSortSendToPlayers = Timings.ofSafe(name + "doChunkMap - Sort Send To Players");
+        doChunkMapPlayersNeedingChunks = Timings.ofSafe(name + "doChunkMap - Players Needing Chunks");
+        doChunkMapPendingSendToPlayers = Timings.ofSafe(name + "doChunkMap - Pending Send To Players");
+        doChunkMapUnloadChunks = Timings.ofSafe(name + "doChunkMap - Unload Chunks");
+        doSounds = Timings.ofSafe(name + "doSounds");
+        doChunkGC = Timings.ofSafe(name + "doChunkGC");
+        doPortalForcer = Timings.ofSafe(name + "doPortalForcer");
+        entityTick = Timings.ofSafe(name + "entityTick");
+        entityRemoval = Timings.ofSafe(name + "entityRemoval");
+        tileEntityTick = Timings.ofSafe(name + "tileEntityTick");
+        tileEntityPending = Timings.ofSafe(name + "tileEntityPending");
+
+        syncChunkLoadTimer = Timings.ofSafe(name + "syncChunkLoad");
+        syncChunkLoadDataTimer = Timings.ofSafe(name + "syncChunkLoad - Data");
+        syncChunkLoadStructuresTimer = Timings.ofSafe(name + "chunkLoad - recreateStructures");
+        syncChunkLoadPostTimer = Timings.ofSafe(name + "chunkLoad - Post");
+        syncChunkLoadPopulateTimer = Timings.ofSafe(name + "chunkLoad - Populate");
+        chunkLoadLevelTimer = Timings.ofSafe(name + "chunkLoad - Load Level");
+        chunkGeneration = Timings.ofSafe(name + "chunkGeneration");
+        chunkIOStage1 = Timings.ofSafe(name + "ChunkIO Stage 1 - DiskIO");
+        chunkIOStage2 = Timings.ofSafe(name + "ChunkIO Stage 2 - Post Load");
+        worldSave = Timings.ofSafe(name + "World Save");
+        worldSaveLevel = Timings.ofSafe(name + "World Save - Level");
+        worldSaveChunks = Timings.ofSafe(name + "World Save - Chunks");
+        chunkSaveData = Timings.ofSafe(name + "Chunk Save - Data");
+
+        tracker1 = Timings.ofSafe(name + "tracker stage 1");
+        tracker2 = Timings.ofSafe(name + "tracker stage 2");
+        doTick = Timings.ofSafe(name + "doTick");
+        tickEntities = Timings.ofSafe(name + "tickEntities");
+    }
+
+    public static Timing getTickList(WorldServer worldserver, String timingsType) {
+        return Timings.ofSafe(worldserver.getWorldData().getName() + " - Scheduled " + timingsType);
+    }
+}
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 5518ec1e54..7691409f6c 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -14,11 +14,14 @@ import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.regex.Pattern;
 
+import com.google.common.collect.Lists;
 import net.minecraft.server.MinecraftServer;
 import org.bukkit.Bukkit;
 import org.bukkit.command.Command;
 import org.bukkit.configuration.InvalidConfigurationException;
 import org.bukkit.configuration.file.YamlConfiguration;
+import co.aikar.timings.Timings;
+import co.aikar.timings.TimingsManager;
 
 public class PaperConfig {
 
@@ -187,4 +190,24 @@ public class PaperConfig {
         config.addDefault(path, def);
         return config.getString(path, config.getString(path));
     }
+
+    private static void timings() {
+        boolean timings = getBoolean("timings.enabled", true);
+        boolean verboseTimings = getBoolean("timings.verbose", true);
+        TimingsManager.privacy = getBoolean("timings.server-name-privacy", false);
+        TimingsManager.hiddenConfigs = getList("timings.hidden-config-entries", Lists.newArrayList("database", "settings.bungeecord-addresses"));
+        int timingHistoryInterval = getInt("timings.history-interval", 300);
+        int timingHistoryLength = getInt("timings.history-length", 3600);
+
+
+        Timings.setVerboseTimingsEnabled(verboseTimings);
+        Timings.setTimingsEnabled(timings);
+        Timings.setHistoryInterval(timingHistoryInterval * 20);
+        Timings.setHistoryLength(timingHistoryLength * 20);
+
+        log("Timings: " + timings +
+                " - Verbose: " + verboseTimings +
+                " - Interval: " + timeSummary(Timings.getHistoryInterval() / 20) +
+                " - Length: " + timeSummary(Timings.getHistoryLength() / 20));
+    }
 }
diff --git a/src/main/java/net/minecraft/server/Block.java b/src/main/java/net/minecraft/server/Block.java
index 8b91e27c66..fd23d45346 100644
--- a/src/main/java/net/minecraft/server/Block.java
+++ b/src/main/java/net/minecraft/server/Block.java
@@ -24,6 +24,15 @@ public class Block implements IMaterial {
     protected final boolean q;
     protected final SoundEffectType stepSound;
     protected final Material material;
+    // Paper start
+    public co.aikar.timings.Timing timing;
+    public co.aikar.timings.Timing getTiming() {
+        if (timing == null) {
+            timing = co.aikar.timings.MinecraftTimings.getBlockTiming(this);
+        }
+        return timing;
+    }
+    // Paper end
     protected final MaterialMapColor t;
     private final float frictionFactor;
     protected final BlockStateList<Block, IBlockData> blockStateList;
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 9cce929c3e..1a2cc0258a 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -89,6 +89,29 @@ public class Chunk implements IChunkAccess {
             return removed;
         }
     }
+    public boolean areNeighborsLoaded(final int radius) {
+        switch (radius) {
+            case 2:
+                return this.neighbors == Integer.MAX_VALUE >> 6;
+            case 1:
+                final int mask =
+                    //       x        z   offset          x        z   offset          x         z   offset
+                    (0x1 << (1 * 5 +  1 + 12)) | (0x1 << (0 * 5 +  1 + 12)) | (0x1 << (-1 * 5 +  1 + 12)) |
+                        (0x1 << (1 * 5 +  0 + 12)) | (0x1 << (0 * 5 +  0 + 12)) | (0x1 << (-1 * 5 +  0 + 12)) |
+                        (0x1 << (1 * 5 + -1 + 12)) | (0x1 << (0 * 5 + -1 + 12)) | (0x1 << (-1 * 5 + -1 + 12));
+                return (this.neighbors & mask) == mask;
+            default:
+                throw new UnsupportedOperationException(String.valueOf(radius));
+        }
+    }
+
+    public void setNeighborLoaded(final int x, final int z) {
+        this.neighbors |= 0x1 << (x * 5 + 12 + z);
+    }
+
+    public void setNeighborUnloaded(final int x, final int z) {
+        this.neighbors &= ~(0x1 << (x * 5 + 12 + z));
+    }
     // Paper end
 
     public Chunk(World world, ChunkCoordIntPair chunkcoordintpair, BiomeBase[] abiomebase, ChunkConverter chunkconverter, TickList<Block> ticklist, TickList<FluidType> ticklist1, long i, @Nullable ChunkSection[] achunksection, @Nullable Consumer<Chunk> consumer) {
@@ -546,6 +569,7 @@ public class Chunk implements IChunkAccess {
             server.getPluginManager().callEvent(new org.bukkit.event.world.ChunkLoadEvent(this.bukkitChunk, this.needsDecoration));
 
             if (this.needsDecoration) {
+                this.world.timings.syncChunkLoadPopulateTimer.startTiming(); // Paper
                 java.util.Random random = new java.util.Random();
                 random.setSeed(world.getSeed());
                 long xRand = random.nextLong() / 2L * 2L + 1L;
@@ -564,6 +588,7 @@ public class Chunk implements IChunkAccess {
                     }
                 }
                 server.getPluginManager().callEvent(new org.bukkit.event.world.ChunkPopulateEvent(bukkitChunk));
+                this.world.timings.syncChunkLoadPopulateTimer.stopTiming(); // Paper
             }
         }
     }
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 845ad7427b..4f0fbe4a0d 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -186,7 +186,9 @@ public class ChunkProviderServer extends IChunkProvider {
     }
 
     public void save(boolean flag) {
+        try (co.aikar.timings.Timing timed = world.timings.chunkSaveData.startTiming()) { // Paper - Timings
         this.playerChunkMap.save(flag);
+        } // Paper - Timings
     }
 
     @Override
@@ -296,10 +298,9 @@ public class ChunkProviderServer extends IChunkProvider {
                             this.world.timings.mobSpawn.stopTiming(); // Spigot
                             this.world.getMethodProfiler().exit();
                         }
-
-                        this.world.timings.doTickTiles.startTiming(); // Spigot
+                        this.world.timings.chunkTicks.startTiming(); // Spigot // Paper
                         this.world.a(chunk, l);
-                        this.world.timings.doTickTiles.stopTiming(); // Spigot
+                        this.world.timings.chunkTicks.stopTiming(); // Spigot // Paper
                     }
                 }
             }
@@ -310,9 +311,7 @@ public class ChunkProviderServer extends IChunkProvider {
             }
         }
 
-        this.world.timings.tracker.startTiming(); // Spigot
         this.playerChunkMap.g();
-        this.world.timings.tracker.stopTiming(); // Spigot
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
index d084d24a01..0fed039f34 100644
--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import co.aikar.timings.Timings;
 import com.google.common.collect.Maps;
 import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
 import it.unimi.dsi.fastutil.longs.LongSet;
@@ -412,7 +413,7 @@ public class ChunkRegionLoader {
     private static void loadEntities(NBTTagCompound nbttagcompound, Chunk chunk) {
         NBTTagList nbttaglist = nbttagcompound.getList("Entities", 10);
         World world = chunk.getWorld();
-        world.timings.syncChunkLoadEntitiesTimer.startTiming(); // Spigot
+        world.timings.chunkLoadLevelTimer.startTiming(); // Spigot
 
         for (int i = 0; i < nbttaglist.size(); ++i) {
             NBTTagCompound nbttagcompound1 = nbttaglist.getCompound(i);
@@ -424,8 +425,6 @@ public class ChunkRegionLoader {
             chunk.d(true);
         }
 
-        world.timings.syncChunkLoadEntitiesTimer.stopTiming(); // Spigot
-        world.timings.syncChunkLoadTileEntitiesTimer.startTiming(); // Spigot
         NBTTagList nbttaglist1 = nbttagcompound.getList("TileEntities", 10);
 
         for (int j = 0; j < nbttaglist1.size(); ++j) {
@@ -442,8 +441,6 @@ public class ChunkRegionLoader {
                 }
             }
         }
-        world.timings.syncChunkLoadTileEntitiesTimer.stopTiming(); // Spigot
-        world.timings.syncChunkLoadTileTicksTimer.startTiming(); // Spigot
 
         if (nbttagcompound.hasKeyOfType("TileTicks", 9) && world.getBlockTickList() instanceof TickListServer) {
             ((TickListServer) world.getBlockTickList()).a(nbttagcompound.getList("TileTicks", 10));
@@ -452,7 +449,7 @@ public class ChunkRegionLoader {
         if (nbttagcompound.hasKeyOfType("LiquidTicks", 9) && world.getFluidTickList() instanceof TickListServer) {
             ((TickListServer) world.getFluidTickList()).a(nbttagcompound.getList("LiquidTicks", 10));
         }
-        world.timings.syncChunkLoadTileTicksTimer.stopTiming(); // Spigot
+        world.timings.chunkLoadLevelTimer.stopTiming(); // Spigot
 
     }
 
diff --git a/src/main/java/net/minecraft/server/CustomFunction.java b/src/main/java/net/minecraft/server/CustomFunction.java
index 46e7737ca3..a3ef943066 100644
--- a/src/main/java/net/minecraft/server/CustomFunction.java
+++ b/src/main/java/net/minecraft/server/CustomFunction.java
@@ -13,12 +13,22 @@ public class CustomFunction {
 
     private final CustomFunction.c[] a;
     private final MinecraftKey b;
+    // Paper start
+    public co.aikar.timings.Timing timing;
+    public co.aikar.timings.Timing getTiming() {
+        if (timing == null) {
+            timing = co.aikar.timings.MinecraftTimings.getCommandFunctionTiming(this);
+        }
+        return timing;
+    }
+    // Paper end
 
     public CustomFunction(MinecraftKey minecraftkey, CustomFunction.c[] acustomfunction_c) {
         this.b = minecraftkey;
         this.a = acustomfunction_c;
     }
 
+    public MinecraftKey getMinecraftKey() { return this.a(); } // Paper - OBFHELPER
     public MinecraftKey a() {
         return this.b;
     }
diff --git a/src/main/java/net/minecraft/server/CustomFunctionData.java b/src/main/java/net/minecraft/server/CustomFunctionData.java
index 42e01136d9..b7c1d7671e 100644
--- a/src/main/java/net/minecraft/server/CustomFunctionData.java
+++ b/src/main/java/net/minecraft/server/CustomFunctionData.java
@@ -100,7 +100,7 @@ public class CustomFunctionData implements IResourcePackListener {
 
             return 0;
         } else {
-            try {
+            try (co.aikar.timings.Timing timing = customfunction.getTiming().startTiming()) { // Paper
                 this.i = true;
                 int j = 0;
                 CustomFunction.c[] acustomfunction_c = customfunction.b();
diff --git a/src/main/java/net/minecraft/server/DedicatedServer.java b/src/main/java/net/minecraft/server/DedicatedServer.java
index b60956218d..19e2df3098 100644
--- a/src/main/java/net/minecraft/server/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/DedicatedServer.java
@@ -31,7 +31,7 @@ import org.apache.logging.log4j.Level;
 
 import org.bukkit.command.CommandSender;
 import org.bukkit.craftbukkit.LoggerOutputStream;
-import org.bukkit.craftbukkit.SpigotTimings; // Spigot
+import co.aikar.timings.MinecraftTimings; // Paper
 import org.bukkit.event.server.ServerCommandEvent;
 import org.bukkit.craftbukkit.util.Waitable;
 import org.bukkit.event.server.RemoteServerCommandEvent;
@@ -428,7 +428,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
     }
 
     public void handleCommandQueue() {
-        SpigotTimings.serverCommandTimer.startTiming(); // Spigot
+        MinecraftTimings.serverCommandTimer.startTiming(); // Spigot
         while (!this.serverCommandQueue.isEmpty()) {
             ServerCommand servercommand = (ServerCommand) this.serverCommandQueue.remove(0);
 
@@ -443,7 +443,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
             // CraftBukkit end
         }
 
-        SpigotTimings.serverCommandTimer.stopTiming(); // Spigot
+        MinecraftTimings.serverCommandTimer.stopTiming(); // Spigot
     }
 
     @Override
@@ -681,7 +681,20 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
                 return remoteControlCommandListener.getMessages();
             }
         };
-        processQueue.add(waitable);
+        // Paper start
+        if (s.toLowerCase().startsWith("timings") && s.toLowerCase().matches("timings (report|paste|get|merged|seperate)")) {
+            org.bukkit.command.BufferedCommandSender sender = new org.bukkit.command.BufferedCommandSender();
+            waitable = new Waitable<String>() {
+                @Override
+                protected String evaluate() {
+                    return sender.getBuffer();
+                }
+            };
+            co.aikar.timings.Timings.generateReport(new co.aikar.timings.TimingsReportListener(sender, waitable));
+        } else {
+            processQueue.add(waitable);
+        }
+        // Paper end
         try {
             return waitable.get();
         } catch (java.util.concurrent.ExecutionException e) {
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 14c3f04170..6127f9ba96 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -29,7 +29,8 @@ import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Hanging;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Vehicle;
-import org.spigotmc.CustomTimingsHandler; // Spigot
+import co.aikar.timings.MinecraftTimings; // Paper
+import co.aikar.timings.Timing; // Paper
 import org.bukkit.event.entity.EntityCombustByEntityEvent;
 import org.bukkit.event.hanging.HangingBreakByEntityEvent;
 import org.bukkit.event.vehicle.VehicleBlockCollisionEvent;
@@ -161,7 +162,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
     public boolean valid;
     public org.bukkit.projectiles.ProjectileSource projectileSource; // For projectiles only
     public boolean forceExplosionKnockback; // SPIGOT-949
-    public CustomTimingsHandler tickTimer = org.bukkit.craftbukkit.SpigotTimings.getEntityTimings(this); // Spigot
+    public Timing tickTimer = MinecraftTimings.getEntityTimings(this); // Paper
     // Spigot start
     public final byte activationType = org.spigotmc.ActivationRange.initializeEntityActivationType(this);
     public final boolean defaultActivationState;
@@ -483,7 +484,6 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
     }
 
     public void move(EnumMoveType enummovetype, Vec3D vec3d) {
-        org.bukkit.craftbukkit.SpigotTimings.entityMoveTimer.startTiming(); // Spigot
         if (this.noclip) {
             this.a(this.getBoundingBox().b(vec3d));
             this.recalcPosition();
@@ -648,7 +648,6 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
 
             this.world.getMethodProfiler().exit();
         }
-        org.bukkit.craftbukkit.SpigotTimings.entityMoveTimer.stopTiming(); // Spigot
     }
 
     protected Vec3D a(Vec3D vec3d, EnumMoveType enummovetype) {
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index f86e6a4c51..85567a7072 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -35,7 +35,7 @@ import org.bukkit.event.entity.EntityTeleportEvent;
 import org.bukkit.event.player.PlayerItemConsumeEvent;
 // CraftBukkit end
 
-import org.bukkit.craftbukkit.SpigotTimings; // Spigot
+import co.aikar.timings.MinecraftTimings; // Paper
 
 public abstract class EntityLiving extends Entity {
 
@@ -2208,7 +2208,6 @@ public abstract class EntityLiving extends Entity {
 
     @Override
     public void tick() {
-        SpigotTimings.timerEntityBaseTick.startTiming(); // Spigot
         super.tick();
         this.dk();
         this.o();
@@ -2283,9 +2282,7 @@ public abstract class EntityLiving extends Entity {
             }
         }
 
-        SpigotTimings.timerEntityBaseTick.stopTiming(); // Spigot
         this.movementTick();
-        SpigotTimings.timerEntityTickRest.startTiming(); // Spigot
         double d0 = this.locX - this.lastX;
         double d1 = this.locZ - this.lastZ;
         float f = (float) (d0 * d0 + d1 * d1);
@@ -2365,8 +2362,6 @@ public abstract class EntityLiving extends Entity {
         if (this.isSleeping()) {
             this.pitch = 0.0F;
         }
-
-        SpigotTimings.timerEntityTickRest.stopTiming(); // Spigot
     }
 
     protected float e(float f, float f1) {
@@ -2440,7 +2435,6 @@ public abstract class EntityLiving extends Entity {
 
         this.setMot(d4, d5, d6);
         this.world.getMethodProfiler().enter("ai");
-        SpigotTimings.timerEntityAI.startTiming(); // Spigot
         if (this.isFrozen()) {
             this.jumping = false;
             this.bb = 0.0F;
@@ -2451,7 +2445,6 @@ public abstract class EntityLiving extends Entity {
             this.doTick();
             this.world.getMethodProfiler().exit();
         }
-        SpigotTimings.timerEntityAI.stopTiming(); // Spigot
 
         this.world.getMethodProfiler().exit();
         this.world.getMethodProfiler().enter("jump");
@@ -2476,9 +2469,7 @@ public abstract class EntityLiving extends Entity {
         this.n();
         AxisAlignedBB axisalignedbb = this.getBoundingBox();
 
-        SpigotTimings.timerEntityAIMove.startTiming(); // Spigot
         this.e(new Vec3D((double) this.bb, (double) this.bc, (double) this.bd));
-        SpigotTimings.timerEntityAIMove.stopTiming(); // Spigot
         this.world.getMethodProfiler().exit();
         this.world.getMethodProfiler().enter("push");
         if (this.bq > 0) {
@@ -2486,9 +2477,7 @@ public abstract class EntityLiving extends Entity {
             this.a(axisalignedbb, this.getBoundingBox());
         }
 
-        SpigotTimings.timerEntityAICollision.startTiming(); // Spigot
         this.collideNearby();
-        SpigotTimings.timerEntityAICollision.stopTiming(); // Spigot
         this.world.getMethodProfiler().exit();
     }
 
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 4de927416b..4c1c914132 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1,5 +1,7 @@
 package net.minecraft.server;
 
+import co.aikar.timings.Timings;
+import com.google.common.base.Stopwatch;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.gson.JsonElement;
@@ -54,8 +56,8 @@ import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.craftbukkit.Main;
 import org.bukkit.event.server.ServerLoadEvent;
 // CraftBukkit end
-import org.bukkit.craftbukkit.SpigotTimings; // Spigot
 import org.spigotmc.SlackActivityAccountant; // Spigot
+import co.aikar.timings.MinecraftTimings; // Paper
 
 public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTask> implements IMojangStatistics, ICommandListener, AutoCloseable, Runnable {
 
@@ -672,6 +674,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         }
         // CraftBukkit end
         MinecraftServer.LOGGER.info("Stopping server");
+        MinecraftTimings.stopServer(); // Paper
         // CraftBukkit start
         if (this.server != null) {
             this.server.disablePlugins();
@@ -949,7 +952,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
     protected void exit() {}
 
     protected void a(BooleanSupplier booleansupplier) {
-        SpigotTimings.serverTickTimer.startTiming(); // Spigot
+        co.aikar.timings.TimingsManager.FULL_SERVER_TICK.startTiming(); // Paper
         this.slackActivityAccountant.tickStarted(); // Spigot
         long i = SystemUtils.getMonotonicNanos();
 
@@ -970,14 +973,12 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         }
 
         if (autosavePeriod > 0 && this.ticks % autosavePeriod == 0) { // CraftBukkit
-            SpigotTimings.worldSaveTimer.startTiming(); // Spigot
             MinecraftServer.LOGGER.debug("Autosave started");
             this.methodProfiler.enter("save");
             this.playerList.savePlayers();
             this.saveChunks(true, false, false);
             this.methodProfiler.exit();
             MinecraftServer.LOGGER.debug("Autosave finished");
-            SpigotTimings.worldSaveTimer.stopTiming(); // Spigot
         }
 
         this.methodProfiler.enter("snooper");
@@ -1000,29 +1001,28 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         this.methodProfiler.exit();
         org.spigotmc.WatchdogThread.tick(); // Spigot
         this.slackActivityAccountant.tickEnded(l); // Spigot
-        SpigotTimings.serverTickTimer.stopTiming(); // Spigot
-        org.spigotmc.CustomTimingsHandler.tick(); // Spigot
+        co.aikar.timings.TimingsManager.FULL_SERVER_TICK.stopTiming(); // Paper
     }
 
     protected void b(BooleanSupplier booleansupplier) {
-        SpigotTimings.schedulerTimer.startTiming(); // Spigot
+        MinecraftTimings.bukkitSchedulerTimer.startTiming(); // Spigot // Paper
         this.server.getScheduler().mainThreadHeartbeat(this.ticks); // CraftBukkit
-        SpigotTimings.schedulerTimer.stopTiming(); // Spigot
+        MinecraftTimings.bukkitSchedulerTimer.stopTiming(); // Spigot // Paper
         this.methodProfiler.enter("commandFunctions");
-        SpigotTimings.commandFunctionsTimer.startTiming(); // Spigot
+        MinecraftTimings.commandFunctionsTimer.startTiming(); // Spigot // Paper
         this.getFunctionData().tick();
-        SpigotTimings.commandFunctionsTimer.stopTiming(); // Spigot
+        MinecraftTimings.commandFunctionsTimer.stopTiming(); // Spigot // Paper
         this.methodProfiler.exitEnter("levels");
 
         // CraftBukkit start
         // Run tasks that are waiting on processing
-        SpigotTimings.processQueueTimer.startTiming(); // Spigot
+        MinecraftTimings.processQueueTimer.startTiming(); // Spigot
         while (!processQueue.isEmpty()) {
             processQueue.remove().run();
         }
-        SpigotTimings.processQueueTimer.stopTiming(); // Spigot
+        MinecraftTimings.processQueueTimer.stopTiming(); // Spigot
 
-        SpigotTimings.timeUpdateTimer.startTiming(); // Spigot
+        MinecraftTimings.timeUpdateTimer.startTiming(); // Spigot // Paper
         // Send time updates to everyone, it will get the right time from the world the player is in.
         if (this.ticks % 20 == 0) {
             for (int i = 0; i < this.getPlayerList().players.size(); ++i) {
@@ -1030,7 +1030,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
                 entityplayer.playerConnection.sendPacket(new PacketPlayOutUpdateTime(entityplayer.world.getTime(), entityplayer.getPlayerTime(), entityplayer.world.getGameRules().getBoolean("doDaylightCycle"))); // Add support for per player time
             }
         }
-        SpigotTimings.timeUpdateTimer.stopTiming(); // Spigot
+        MinecraftTimings.timeUpdateTimer.stopTiming(); // Spigot // Paper
 
         // WorldServer worldserver; // CraftBukkit - dropped down
         long i;
@@ -1077,20 +1077,20 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         }
 
         this.methodProfiler.exitEnter("connection");
-        SpigotTimings.connectionTimer.startTiming(); // Spigot
+        MinecraftTimings.connectionTimer.startTiming(); // Spigot
         this.getServerConnection().c();
-        SpigotTimings.connectionTimer.stopTiming(); // Spigot
+        MinecraftTimings.connectionTimer.stopTiming(); // Spigot
         this.methodProfiler.exitEnter("players");
-        SpigotTimings.playerListTimer.startTiming(); // Spigot
+        MinecraftTimings.playerListTimer.startTiming(); // Spigot
         this.playerList.tick();
-        SpigotTimings.playerListTimer.stopTiming(); // Spigot
+        MinecraftTimings.playerListTimer.stopTiming(); // Spigot
         this.methodProfiler.exitEnter("server gui refresh");
 
-        SpigotTimings.tickablesTimer.startTiming(); // Spigot
+        MinecraftTimings.tickablesTimer.startTiming(); // Spigot
         for (int j = 0; j < this.tickables.size(); ++j) {
             ((Runnable) this.tickables.get(j)).run();
         }
-        SpigotTimings.tickablesTimer.stopTiming(); // Spigot
+        MinecraftTimings.tickablesTimer.stopTiming(); // Spigot
 
         this.methodProfiler.exit();
     }
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index 755c0406e1..ee65b01f43 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -1,6 +1,8 @@
 package net.minecraft.server;
 
 import com.google.common.collect.ImmutableList;
+import co.aikar.timings.Timing;
+import com.google.common.collect.ComparisonChain;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 import com.mojang.datafixers.DataFixer;
@@ -244,6 +246,24 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
                     playerchunk = new PlayerChunk(new ChunkCoordIntPair(i), j, this.lightEngine, this.q, this);
                 }
 
+                // TODO: VERIFY THIS
+                ChunkCoordIntPair currentChunkPair = new ChunkCoordIntPair(i);
+                for (int x = -2; x < 3; x++) {
+                    for (int z = -2; z < 3; z++) {
+                        if (x == 0 && z == 0) {
+                            continue;
+                        }
+
+
+                        PlayerChunk neighborPlayer = getUpdatingChunk(ChunkCoordIntPair.pair(currentChunkPair.x + x, currentChunkPair.z + z));
+                        if (neighborPlayer != null) {
+                            Chunk neighbor = neighborPlayer.getChunk();
+                            neighbor.setNeighborLoaded(-x, -z);
+                            playerchunk.getChunk().setNeighborLoaded(x, z);
+                        }
+                    }
+                }
+
                 this.updatingChunks.put(i, playerchunk);
                 this.updatingChunksModified = true;
             }
@@ -332,6 +352,23 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
                         ChunkUnloadEvent event = new ChunkUnloadEvent(chunk.bukkitChunk, chunk.isNeedsSaving());
                         this.world.getServer().getPluginManager().callEvent(event);
                         this.saveChunk(ichunkaccess, event.isSaveChunk());
+                        // TODO: VERIFY THIS
+                        // Paper - Update neighbor counts
+                        for (int x = -2; x < 3; x++) {
+                            for (int z = -2; z < 3; z++) {
+                                if (x == 0 && z == 0) {
+                                    continue;
+                                }
+
+
+                                Chunk neighbor = ((Chunk) ichunkaccess).world.getChunkProvider().getChunkAt(event.getChunk().getX(), event.getChunk().getZ(), false);
+                                if (neighbor != null) {
+                                    neighbor.setNeighborUnloaded(-x, -z);
+                                    ((Chunk) ichunkaccess).setNeighborUnloaded(x, z);
+                                }
+                            }
+                        }
+                        // Paper
                         // CraftBukkit end
 
                         chunk.c(false);
@@ -402,7 +439,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
             });
 
             return completablefuture.thenComposeAsync((either) -> {
-                return (CompletableFuture) either.map((list) -> {
+                return either.map((list) -> { // Paper - Shut up.
                     try {
                         CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> completablefuture1 = chunkstatus.a(this.world, this.chunkGenerator, this.definedStructureManager, this.lightEngine, (ichunkaccess) -> {
                             return this.b(playerchunk);
@@ -879,6 +916,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
 
         PlayerChunkMap.EntityTracker playerchunkmap_entitytracker;
         ObjectIterator objectiterator;
+        world.timings.tracker1.startTiming(); // Paper
 
         for (objectiterator = this.trackedEntities.values().iterator(); objectiterator.hasNext(); playerchunkmap_entitytracker.trackerEntry.a()) {
             playerchunkmap_entitytracker = (PlayerChunkMap.EntityTracker) objectiterator.next();
@@ -896,9 +934,11 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
                 playerchunkmap_entitytracker.e = sectionposition1;
             }
         }
+        world.timings.tracker1.stopTiming(); // Paper
 
         objectiterator = this.trackedEntities.values().iterator();
 
+        world.timings.tracker2.startTiming(); // Paper
         while (objectiterator.hasNext()) {
             playerchunkmap_entitytracker = (PlayerChunkMap.EntityTracker) objectiterator.next();
             playerchunkmap_entitytracker.track(list);
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 78a090ac75..e07f4a9680 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -58,6 +58,7 @@ import org.bukkit.inventory.CraftingInventory;
 import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.inventory.InventoryView;
 import org.bukkit.util.NumberConversions;
+import co.aikar.timings.MinecraftTimings; // Paper
 // CraftBukkit end
 
 public class PlayerConnection implements PacketListenerPlayIn {
@@ -135,7 +136,6 @@ public class PlayerConnection implements PacketListenerPlayIn {
     // CraftBukkit end
 
     public void tick() {
-        org.bukkit.craftbukkit.SpigotTimings.playerConnectionTimer.startTiming(); // Spigot
         this.syncPosition();
         this.player.playerTick();
         this.player.setLocation(this.l, this.m, this.n, this.player.yaw, this.player.pitch);
@@ -208,7 +208,6 @@ public class PlayerConnection implements PacketListenerPlayIn {
             this.player.resetIdleTimer(); // CraftBukkit - SPIGOT-854
             this.disconnect(new ChatMessage("multiplayer.disconnect.idling", new Object[0]));
         }
-        org.bukkit.craftbukkit.SpigotTimings.playerConnectionTimer.stopTiming(); // Spigot
 
     }
 
@@ -1647,7 +1646,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
     // CraftBukkit end
 
     private void handleCommand(String s) {
-        org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.startTiming(); // Spigot
+        MinecraftTimings.playerCommandTimer.startTiming(); // Paper
         // CraftBukkit start - whole method
         if ( org.spigotmc.SpigotConfig.logCommands ) // Spigot
         this.LOGGER.info(this.player.getName() + " issued server command: " + s);
@@ -1658,7 +1657,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
         this.server.getPluginManager().callEvent(event);
 
         if (event.isCancelled()) {
-            org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.stopTiming(); // Spigot
+            MinecraftTimings.playerCommandTimer.stopTiming(); // Paper
             return;
         }
 
@@ -1671,7 +1670,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
             java.util.logging.Logger.getLogger(PlayerConnection.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
             return;
         } finally {
-            org.bukkit.craftbukkit.SpigotTimings.playerCommandTimer.stopTiming(); // Spigot
+            MinecraftTimings.playerCommandTimer.stopTiming(); // Paper
         }
         // this.minecraftServer.getCommandDispatcher().a(this.player.getCommandListener(), s);
         // CraftBukkit end
diff --git a/src/main/java/net/minecraft/server/PlayerConnectionUtils.java b/src/main/java/net/minecraft/server/PlayerConnectionUtils.java
index cb6d50ea70..9ba03f8ed0 100644
--- a/src/main/java/net/minecraft/server/PlayerConnectionUtils.java
+++ b/src/main/java/net/minecraft/server/PlayerConnectionUtils.java
@@ -1,5 +1,8 @@
 package net.minecraft.server;
 
+import co.aikar.timings.MinecraftTimings; // Paper
+import co.aikar.timings.Timing; // Paper
+
 public class PlayerConnectionUtils {
 
     public static <T extends PacketListener> void ensureMainThread(Packet<T> packet, T t0, WorldServer worldserver) throws CancelledPacketHandleException {
@@ -8,9 +11,12 @@ public class PlayerConnectionUtils {
 
     public static <T extends PacketListener> void ensureMainThread(Packet<T> packet, T t0, IAsyncTaskHandler<?> iasynctaskhandler) throws CancelledPacketHandleException {
         if (!iasynctaskhandler.isMainThread()) {
+            Timing timing = MinecraftTimings.getPacketTiming(packet); // Paper
             iasynctaskhandler.execute(() -> {
                 if (MinecraftServer.getServer().hasStopped() || (t0 instanceof PlayerConnection && ((PlayerConnection) t0).processedDisconnect)) return; // CraftBukkit, MC-142590
+                try (Timing ignored = timing.startTiming()) { // Paper
                 packet.a(t0);
+                } // Paper - timings
             });
             throw CancelledPacketHandleException.INSTANCE;
         }
diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 56e36c8668..7a837ec0fc 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -1,5 +1,6 @@
 package net.minecraft.server;
 
+import co.aikar.timings.MinecraftTimings;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
@@ -894,10 +895,11 @@ public abstract class PlayerList {
     }
 
     public void savePlayers() {
+        MinecraftTimings.savePlayers.startTiming(); // Paper
         for (int i = 0; i < this.players.size(); ++i) {
             this.savePlayerFile((EntityPlayer) this.players.get(i));
         }
-
+        MinecraftTimings.savePlayers.stopTiming(); // Paper
     }
 
     public WhiteList getWhitelist() {
diff --git a/src/main/java/net/minecraft/server/TickListServer.java b/src/main/java/net/minecraft/server/TickListServer.java
index 537e610797..b48e5b51a0 100644
--- a/src/main/java/net/minecraft/server/TickListServer.java
+++ b/src/main/java/net/minecraft/server/TickListServer.java
@@ -25,13 +25,19 @@ public class TickListServer<T> implements TickList<T> {
     private final List<NextTickListEntry<T>> g = Lists.newArrayList();
     private final Consumer<NextTickListEntry<T>> h;
 
-    public TickListServer(WorldServer worldserver, Predicate<T> predicate, Function<T, MinecraftKey> function, Function<MinecraftKey, T> function1, Consumer<NextTickListEntry<T>> consumer) {
+    public TickListServer(WorldServer worldserver, Predicate<T> predicate, Function<T, MinecraftKey> function, Function<MinecraftKey, T> function1, Consumer<NextTickListEntry<T>> consumer, String timingsType) { // Paper
         this.a = predicate;
         this.b = function;
         this.c = function1;
         this.f = worldserver;
         this.h = consumer;
+        // Paper start
+        timingCleanup = co.aikar.timings.WorldTimingsHandler.getTickList(worldserver, timingsType + " - Cleanup");
+        timingTicking = co.aikar.timings.WorldTimingsHandler.getTickList(worldserver, timingsType + " - Ticking");
     }
+    private final co.aikar.timings.Timing timingCleanup; // Paper
+    private final co.aikar.timings.Timing timingTicking; // Paper
+    // Paper end
 
     public void a() {
         int i = this.nextTickList.size();
@@ -51,6 +57,7 @@ public class TickListServer<T> implements TickList<T> {
 
             this.f.getMethodProfiler().enter("cleaning");
 
+            timingCleanup.startTiming(); // Paper
             NextTickListEntry<T> nextticklistentry; // CraftBukkit - decompile error
 
             for (int j = 0; j < i; ++j) {
@@ -63,9 +70,11 @@ public class TickListServer<T> implements TickList<T> {
                 // this.nextTickListHash.remove(nextticklistentry); // CraftBukkit - use nextTickList
                 this.g.add(nextticklistentry);
             }
+            timingCleanup.stopTiming(); // Paper
 
             this.f.getMethodProfiler().exit();
             this.f.getMethodProfiler().enter("ticking");
+            timingTicking.startTiming(); // Paper
             Iterator iterator = this.g.iterator();
 
             while (iterator.hasNext()) {
@@ -88,6 +97,7 @@ public class TickListServer<T> implements TickList<T> {
 
             this.f.getMethodProfiler().exit();
             this.g.clear();
+            timingTicking.stopTiming(); // Paper
         }
     }
 
diff --git a/src/main/java/net/minecraft/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
index 4c811325c3..da30d2cf86 100644
--- a/src/main/java/net/minecraft/server/TileEntity.java
+++ b/src/main/java/net/minecraft/server/TileEntity.java
@@ -8,11 +8,12 @@ import org.bukkit.craftbukkit.persistence.CraftPersistentDataContainer;
 import org.bukkit.craftbukkit.persistence.CraftPersistentDataTypeRegistry;
 import org.bukkit.inventory.InventoryHolder;
 // CraftBukkit end
-import org.spigotmc.CustomTimingsHandler; // Spigot
+import co.aikar.timings.MinecraftTimings; // Paper
+import co.aikar.timings.Timing; // Paper
 
 public abstract class TileEntity implements KeyedObject { // Paper
 
-    public CustomTimingsHandler tickTimer = org.bukkit.craftbukkit.SpigotTimings.getTileEntityTimings(this); // Spigot
+    public Timing tickTimer = MinecraftTimings.getTileEntityTimings(this); // Paper
     // CraftBukkit start - data containers
     private static final CraftPersistentDataTypeRegistry DATA_TYPE_REGISTRY = new CraftPersistentDataTypeRegistry();
     public final CraftPersistentDataContainer persistentDataContainer = new CraftPersistentDataContainer(DATA_TYPE_REGISTRY);
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 83fdea893c..738d9da8ce 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1,5 +1,7 @@
 package net.minecraft.server;
 
+import co.aikar.timings.Timing;
+import co.aikar.timings.Timings;
 import com.google.common.collect.Lists;
 import java.io.IOException;
 import java.util.Collection;
@@ -20,7 +22,6 @@ import java.util.ArrayList;
 import java.util.Map;
 import org.bukkit.Bukkit;
 import org.bukkit.block.BlockState;
-import org.bukkit.craftbukkit.SpigotTimings; // Spigot
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.craftbukkit.CraftWorld;
 import org.bukkit.craftbukkit.block.CraftBlockState;
@@ -88,7 +89,7 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose
 
     public final com.destroystokyo.paper.PaperWorldConfig paperConfig; // Paper
 
-    public final SpigotTimings.WorldTimingsHandler timings; // Spigot
+    public final co.aikar.timings.WorldTimingsHandler timings; // Paper
     public static BlockPosition lastPhysicsProblem; // Spigot
     private org.spigotmc.TickLimiter entityLimiter;
     private org.spigotmc.TickLimiter tileLimiter;
@@ -150,7 +151,7 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose
             public void c(WorldBorder worldborder, double d0) {}
         });
         // CraftBukkit end
-        timings = new SpigotTimings.WorldTimingsHandler(this); // Spigot - code below can generate new world and access timings
+        timings = new co.aikar.timings.WorldTimingsHandler(this); // Paper - code below can generate new world and access timings
         this.entityLimiter = new org.spigotmc.TickLimiter(spigotConfig.entityMaxTickTime);
         this.tileLimiter = new org.spigotmc.TickLimiter(spigotConfig.tileMaxTickTime);
     }
@@ -733,14 +734,14 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose
         }
 
         timings.tileEntityPending.stopTiming(); // Spigot
+        co.aikar.timings.TimingHistory.tileEntityTicks += this.tileEntityListTick.size(); // Paper
         gameprofilerfiller.exit();
         spigotConfig.currentPrimedTnt = 0; // Spigot
     }
 
     public void a(Consumer<Entity> consumer, Entity entity) {
         try {
-            // Spigot start
-            SpigotTimings.tickEntityTimer.startTiming();
+            timings.tickEntities.startTiming();
             entity.tickTimer.startTiming();
             // Spigot end
             consumer.accept(entity);
@@ -754,7 +755,7 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose
         // Spigot start
         finally {
             entity.tickTimer.stopTiming();
-            SpigotTimings.tickEntityTimer.startTiming();
+            timings.tickEntities.stopTiming();
         }
         // Spigot end
     }
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index d08c5fc93b..11cd9003e3 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1,5 +1,7 @@
 package net.minecraft.server;
 
+import co.aikar.timings.TimingHistory;
+import co.aikar.timings.Timings;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Queues;
@@ -37,7 +39,6 @@ import org.bukkit.Bukkit;
 
 import org.bukkit.WeatherType;
 import org.bukkit.block.BlockState;
-import org.bukkit.craftbukkit.SpigotTimings; // Spigot
 import org.bukkit.craftbukkit.event.CraftEventFactory;
 import org.bukkit.craftbukkit.util.HashTreeSet;
 
@@ -99,10 +100,10 @@ public class WorldServer extends World {
         // CraftBukkit end
         this.nextTickListBlock = new TickListServer<>(this, (block) -> {
             return block == null || block.getBlockData().isAir();
-        }, IRegistry.BLOCK::getKey, IRegistry.BLOCK::get, this::b);
+        }, IRegistry.BLOCK::getKey, IRegistry.BLOCK::get, this::b, "Blocks"); // Paper - Timings
         this.nextTickListFluid = new TickListServer<>(this, (fluidtype) -> {
             return fluidtype == null || fluidtype == FluidTypes.EMPTY;
-        }, IRegistry.FLUID::getKey, IRegistry.FLUID::get, this::a);
+        }, IRegistry.FLUID::getKey, IRegistry.FLUID::get, this::a, "Fluids"); // Paper - Timings
         this.I = Sets.newHashSet();
         this.siegeManager = new VillageSiege(this);
         this.J = new ObjectLinkedOpenHashSet();
@@ -327,6 +328,7 @@ public class WorldServer extends World {
 
             org.spigotmc.ActivationRange.activateEntities(this); // Spigot
             timings.entityTick.startTiming(); // Spigot
+            TimingHistory.entityTicks += this.globalEntityList.size(); // Paper
             while (objectiterator.hasNext()) {
                 Entry<Entity> entry = (Entry) objectiterator.next();
                 Entity entity1 = (Entity) entry.getValue();
@@ -430,6 +432,7 @@ public class WorldServer extends World {
         }
 
         gameprofilerfiller.exitEnter("tickBlocks");
+        timings.chunkTicksBlocks.startTiming(); // Paper
         if (i > 0) {
             ChunkSection[] achunksection = chunk.getSections();
             int l = achunksection.length;
@@ -461,7 +464,7 @@ public class WorldServer extends World {
                 }
             }
         }
-
+        timings.chunkTicksBlocks.stopTiming(); // Paper
         gameprofilerfiller.exit();
     }
 
@@ -754,6 +757,7 @@ public class WorldServer extends World {
 
         if (!flag1) {
             org.bukkit.Bukkit.getPluginManager().callEvent(new org.bukkit.event.world.WorldSaveEvent(getWorld())); // CraftBukkit
+            try (Timing ignored = timings.worldSave.startTiming()) { //Paper
             if (iprogressupdate != null) {
                 iprogressupdate.a(new ChatMessage("menu.savingLevel", new Object[0]));
             }
@@ -763,7 +767,10 @@ public class WorldServer extends World {
                 iprogressupdate.c(new ChatMessage("menu.savingChunks", new Object[0]));
             }
 
+            timings.worldSaveChunks.startTiming(); // Paper
             chunkproviderserver.save(flag);
+            timings.worldSaveChunks.stopTiming(); // Paper
+            } // Paper
         }
     }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 5dc2bb1246..8e877055c3 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1926,12 +1926,31 @@ public final class CraftServer implements Server {
     private final Spigot spigot = new Spigot()
     {
 
+        @Deprecated
         @Override
         public YamlConfiguration getConfig()
         {
             return org.spigotmc.SpigotConfig.config;
         }
 
+        @Override
+        public YamlConfiguration getBukkitConfig()
+        {
+            return configuration;
+        }
+
+        @Override
+        public YamlConfiguration getSpigotConfig()
+        {
+            return org.spigotmc.SpigotConfig.config;
+        }
+
+        @Override
+        public YamlConfiguration getPaperConfig()
+        {
+            return com.destroystokyo.paper.PaperConfig.config;
+        }
+
         @Override
         public void restart() {
             org.spigotmc.RestartCommand.restart();
diff --git a/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java b/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java
deleted file mode 100644
index 38f211526b..0000000000
--- a/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java
+++ /dev/null
@@ -1,166 +0,0 @@
-package org.bukkit.craftbukkit;
-
-import java.util.HashMap;
-import net.minecraft.server.Entity;
-import net.minecraft.server.TileEntity;
-import net.minecraft.server.World;
-import org.bukkit.craftbukkit.scheduler.CraftTask;
-import org.bukkit.plugin.java.JavaPluginLoader;
-import org.bukkit.scheduler.BukkitTask;
-import org.spigotmc.CustomTimingsHandler;
-
-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 commandFunctionsTimer = new CustomTimingsHandler("Command Functions");
-    public static final CustomTimingsHandler connectionTimer = new CustomTimingsHandler("Connection Handler");
-    public static final CustomTimingsHandler playerConnectionTimer = new CustomTimingsHandler("** PlayerConnection");
-    public static final CustomTimingsHandler tickablesTimer = new CustomTimingsHandler("Tickables");
-    public static final CustomTimingsHandler schedulerTimer = new CustomTimingsHandler("Scheduler");
-    public static final CustomTimingsHandler timeUpdateTimer = new CustomTimingsHandler("Time Update");
-    public static final CustomTimingsHandler serverCommandTimer = new CustomTimingsHandler("Server Command");
-    public static final CustomTimingsHandler worldSaveTimer = new CustomTimingsHandler("World Save");
-
-    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 processQueueTimer = new CustomTimingsHandler("processQueue");
-    public static final CustomTimingsHandler schedulerSyncTimer = new CustomTimingsHandler("** Scheduler - Sync Tasks", JavaPluginLoader.pluginParentTimer);
-
-    public static final CustomTimingsHandler playerCommandTimer = new CustomTimingsHandler("** playerCommand");
-
-    public static final CustomTimingsHandler entityActivationCheckTimer = new CustomTimingsHandler("entityActivationCheck");
-    public static final CustomTimingsHandler checkIfActiveTimer = new CustomTimingsHandler("** checkIfActive");
-
-    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) {
-        if (!task.isSync()) {
-            return null;
-        }
-        String plugin;
-        final CraftTask ctask = (CraftTask) task;
-
-        if (task.getOwner() != null) {
-            plugin = task.getOwner().getDescription().getFullName();
-        } else {
-            plugin = "Unknown";
-        }
-        String taskname = ctask.getTaskName();
-
-        String name = "Task: " + plugin + " Runnable: " + taskname;
-        if (period > 0) {
-            name += "(interval:" + period +")";
-        } else {
-            name += "(Single)";
-        }
-        CustomTimingsHandler result = pluginTaskTimingMap.get(name);
-        if (result == null) {
-            result = new CustomTimingsHandler(name, SpigotTimings.schedulerSyncTimer);
-            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().getName();
-        CustomTimingsHandler result = entityTypeTimingMap.get(entityType);
-        if (result == null) {
-            result = new CustomTimingsHandler("** tickEntity - " + entity.getClass().getSimpleName(), 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().getName();
-        CustomTimingsHandler result = tileEntityTypeTimingMap.get(entityType);
-        if (result == null) {
-            result = new CustomTimingsHandler("** tickTileEntity - " + entity.getClass().getSimpleName(), 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 doChunkUnload;
-        public final CustomTimingsHandler doPortalForcer;
-        public final CustomTimingsHandler doTickPending;
-        public final CustomTimingsHandler doTickTiles;
-        public final CustomTimingsHandler doVillages;
-        public final CustomTimingsHandler doChunkMap;
-        public final CustomTimingsHandler doSounds;
-        public final CustomTimingsHandler entityTick;
-        public final CustomTimingsHandler tileEntityTick;
-        public final CustomTimingsHandler tileEntityPending;
-        public final CustomTimingsHandler tracker;
-        public final CustomTimingsHandler doTick;
-        public final CustomTimingsHandler tickEntities;
-
-        public final CustomTimingsHandler syncChunkLoadTimer;
-        public final CustomTimingsHandler syncChunkLoadStructuresTimer;
-        public final CustomTimingsHandler syncChunkLoadEntitiesTimer;
-        public final CustomTimingsHandler syncChunkLoadTileEntitiesTimer;
-        public final CustomTimingsHandler syncChunkLoadTileTicksTimer;
-        public final CustomTimingsHandler syncChunkLoadPostTimer;
-
-        public WorldTimingsHandler(World server) {
-            String name = server.worldData.getName() +" - ";
-
-            mobSpawn = new CustomTimingsHandler("** " + name + "mobSpawn");
-            doChunkUnload = new CustomTimingsHandler("** " + name + "doChunkUnload");
-            doTickPending = new CustomTimingsHandler("** " + name + "doTickPending");
-            doTickTiles = new CustomTimingsHandler("** " + name + "doTickTiles");
-            doVillages = new CustomTimingsHandler("** " + name + "doVillages");
-            doChunkMap = new CustomTimingsHandler("** " + name + "doChunkMap");
-            doSounds = new CustomTimingsHandler("** " + name + "doSounds");
-            doPortalForcer = new CustomTimingsHandler("** " + name + "doPortalForcer");
-            entityTick = new CustomTimingsHandler("** " + name + "entityTick");
-            tileEntityTick = new CustomTimingsHandler("** " + name + "tileEntityTick");
-            tileEntityPending = new CustomTimingsHandler("** " + name + "tileEntityPending");
-
-            syncChunkLoadTimer = new CustomTimingsHandler("** " + name + "syncChunkLoad");
-            syncChunkLoadStructuresTimer = new CustomTimingsHandler("** " + name + "chunkLoad - Structures");
-            syncChunkLoadEntitiesTimer = new CustomTimingsHandler("** " + name + "chunkLoad - Entities");
-            syncChunkLoadTileEntitiesTimer = new CustomTimingsHandler("** " + name + "chunkLoad - TileEntities");
-            syncChunkLoadTileTicksTimer = new CustomTimingsHandler("** " + name + "chunkLoad - TileTicks");
-            syncChunkLoadPostTimer = new CustomTimingsHandler("** " + name + "chunkLoad - Post");
-
-
-            tracker = new CustomTimingsHandler(name + "tracker");
-            doTick = new CustomTimingsHandler(name + "doTick");
-            tickEntities = new CustomTimingsHandler(name + "tickEntities");
-        }
-    }
-}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 6806ada495..e45fd0028b 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1728,6 +1728,14 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
             packet.components = components;
             getHandle().playerConnection.sendPacket(packet);
         }
+
+        // Paper start
+        @Override
+        public int getPing()
+        {
+            return getHandle().ping;
+        }
+        // Paper end
     };
 
     public Player.Spigot spigot()
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
index b90979c7ba..8823f94f7b 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
@@ -1,5 +1,6 @@
 package org.bukkit.craftbukkit.scheduler;
 
+import co.aikar.timings.MinecraftTimings; // Paper
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import java.util.ArrayList;
 import java.util.Comparator;
@@ -248,7 +249,7 @@ public class CraftScheduler implements BukkitScheduler {
                             }
                         }
                         return false;
-                    }});
+                    }}){{this.timings=co.aikar.timings.MinecraftTimings.getCancelTasksTimer();}}; // Paper
         handle(task, 0L);
         for (CraftTask taskPending = head.getNext(); taskPending != null; taskPending = taskPending.getNext()) {
             if (taskPending == task) {
@@ -283,7 +284,7 @@ public class CraftScheduler implements BukkitScheduler {
                             }
                         }
                     }
-                });
+                }){{this.timings=co.aikar.timings.MinecraftTimings.getCancelTasksTimer(plugin);}}; // Paper
         handle(task, 0L);
         for (CraftTask taskPending = head.getNext(); taskPending != null; taskPending = taskPending.getNext()) {
             if (taskPending == task) {
@@ -390,9 +391,7 @@ public class CraftScheduler implements BukkitScheduler {
             if (task.isSync()) {
                 currentTask = task;
                 try {
-                    task.timings.startTiming(); // Spigot
                     task.run();
-                    task.timings.stopTiming(); // Spigot
                 } catch (final Throwable throwable) {
                     task.getOwner().getLogger().log(
                             Level.WARNING,
@@ -419,8 +418,10 @@ public class CraftScheduler implements BukkitScheduler {
                 runners.remove(task.getTaskId());
             }
         }
+        MinecraftTimings.bukkitSchedulerFinishTimer.startTiming();
         pending.addAll(temp);
         temp.clear();
+        MinecraftTimings.bukkitSchedulerFinishTimer.stopTiming();
         debugHead = debugHead.getNextHead(currentTick);
     }
 
@@ -453,6 +454,7 @@ public class CraftScheduler implements BukkitScheduler {
     }
 
     private void parsePending() {
+        MinecraftTimings.bukkitSchedulerPendingTimer.startTiming();
         CraftTask head = this.head;
         CraftTask task = head.getNext();
         CraftTask lastTask = head;
@@ -471,6 +473,7 @@ public class CraftScheduler implements BukkitScheduler {
            task.setNext(null);
         }
         this.head = lastTask;
+        MinecraftTimings.bukkitSchedulerPendingTimer.stopTiming();
     }
 
     private boolean isReady(final int currentTick) {
diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
index 3f55381c15..0d9a466809 100644
--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
+++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftTask.java
@@ -1,9 +1,11 @@
 package org.bukkit.craftbukkit.scheduler;
 
 import java.util.function.Consumer;
+
+import co.aikar.timings.NullTimingHandler;
 import org.bukkit.Bukkit;
-import org.bukkit.craftbukkit.SpigotTimings; // Spigot
-import org.spigotmc.CustomTimingsHandler; // Spigot
+import co.aikar.timings.MinecraftTimings; // Paper
+import co.aikar.timings.Timing; // Paper
 import org.bukkit.plugin.Plugin;
 import org.bukkit.scheduler.BukkitTask;
 
@@ -26,12 +28,12 @@ public class CraftTask implements BukkitTask, Runnable { // Spigot
      */
     private volatile long period;
     private long nextRun;
-    private final Runnable rTask;
-    private final Consumer<BukkitTask> cTask;
+    public final Runnable rTask; // Paper
+    public final Consumer<BukkitTask> cTask; // Paper
+    public Timing timings; // Paper
     private final Plugin plugin;
     private final int id;
 
-    final CustomTimingsHandler timings; // Spigot
     CraftTask() {
         this(null, null, CraftTask.NO_REPEATING, CraftTask.NO_REPEATING);
     }
@@ -40,7 +42,7 @@ public class CraftTask implements BukkitTask, Runnable { // Spigot
         this(null, task, CraftTask.NO_REPEATING, CraftTask.NO_REPEATING);
     }
 
-    CraftTask(final Plugin plugin, final Object task, final int id, final long period) {
+    CraftTask(final Plugin plugin, final Object task, final int id, final long period) { // Paper
         this.plugin = plugin;
         if (task instanceof Runnable) {
             this.rTask = (Runnable) task;
@@ -57,7 +59,7 @@ public class CraftTask implements BukkitTask, Runnable { // Spigot
         }
         this.id = id;
         this.period = period;
-        this.timings = this.isSync() ? SpigotTimings.getPluginTaskTimings(this, period) : null; // Spigot
+        timings = task != null ? MinecraftTimings.getPluginTaskTimings(this, period) : NullTimingHandler.NULL; // Paper
     }
 
     @Override
@@ -77,11 +79,13 @@ public class CraftTask implements BukkitTask, Runnable { // Spigot
 
     @Override
     public void run() {
+        try (Timing ignored = timings.startTiming()) { // Paper
         if (rTask != null) {
             rTask.run();
         } else {
             cTask.accept(this);
         }
+        } // Paper
     }
 
     long getPeriod() {
@@ -108,7 +112,7 @@ public class CraftTask implements BukkitTask, Runnable { // Spigot
         this.next = next;
     }
 
-    Class<?> getTaskClass() {
+    public Class<?> getTaskClass() {
         return (rTask != null) ? rTask.getClass() : ((cTask != null) ? cTask.getClass() : null);
     }
 
@@ -132,9 +136,4 @@ public class CraftTask implements BukkitTask, Runnable { // Spigot
         return true;
     }
 
-    // Spigot start
-    public String getTaskName() {
-        return (getTaskClass() == null) ? "Unknown" : getTaskClass().getName();
-    }
-    // Spigot end
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftIconCache.java b/src/main/java/org/bukkit/craftbukkit/util/CraftIconCache.java
index e52ef47b78..3d90b34268 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftIconCache.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftIconCache.java
@@ -5,6 +5,7 @@ import org.bukkit.util.CachedServerIcon;
 public class CraftIconCache implements CachedServerIcon {
     public final String value;
 
+    public String getData() { return value; } // Paper
     public CraftIconCache(final String value) {
         this.value = value;
     }
diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
index 76b060a126..bf35950867 100644
--- a/src/main/java/org/spigotmc/ActivationRange.java
+++ b/src/main/java/org/spigotmc/ActivationRange.java
@@ -30,7 +30,7 @@ import net.minecraft.server.EntityWither;
 import net.minecraft.server.MathHelper;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.World;
-import org.bukkit.craftbukkit.SpigotTimings;
+import co.aikar.timings.MinecraftTimings;
 
 public class ActivationRange
 {
@@ -64,8 +64,8 @@ public class ActivationRange
     /**
      * These entities are excluded from Activation range checks.
      *
-     * @param entity
-     * @param world
+     * @param entity Entity to initialize
+     * @param config Spigot config to determine ranges
      * @return boolean If it should always tick.
      */
     public static boolean initializeEntityActivationState(Entity entity, SpigotWorldConfig config)
@@ -99,7 +99,7 @@ public class ActivationRange
      */
     public static void activateEntities(World world)
     {
-        SpigotTimings.entityActivationCheckTimer.startTiming();
+        MinecraftTimings.entityActivationCheckTimer.startTiming();
         final int miscActivationRange = world.spigotConfig.miscActivationRange;
         final int animalActivationRange = world.spigotConfig.animalActivationRange;
         final int monsterActivationRange = world.spigotConfig.monsterActivationRange;
@@ -133,7 +133,7 @@ public class ActivationRange
                 }
             }
         }
-        SpigotTimings.entityActivationCheckTimer.stopTiming();
+        MinecraftTimings.entityActivationCheckTimer.stopTiming();
     }
 
     /**
@@ -247,10 +247,8 @@ public class ActivationRange
      */
     public static boolean checkIfActive(Entity entity)
     {
-        SpigotTimings.checkIfActiveTimer.startTiming();
         // Never safe to skip fireworks or entities not yet added to chunk
         if ( !entity.inChunk || entity instanceof EntityFireworks ) {
-            SpigotTimings.checkIfActiveTimer.stopTiming();
             return true;
         }
 
@@ -274,7 +272,14 @@ public class ActivationRange
         {
             isActive = false;
         }
-        SpigotTimings.checkIfActiveTimer.stopTiming();
+        int x = MathHelper.floor( entity.locX );
+        int z = MathHelper.floor( entity.locZ );
+        // Make sure not on edge of unloaded chunk
+        Chunk chunk = entity.world.getChunkIfLoaded( x >> 4, z >> 4 );
+        if ( isActive && !( chunk != null && chunk.areNeighborsLoaded( 1 ) ) )
+        {
+            isActive = false;
+        }
         return isActive;
     }
 }
-- 
2.21.0