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Paper/Spigot-Server-Patches/0377-Chunk-debug-command.patch
Aikar b2d81e21c5
Improve Chunk Prioritization and Internal Scheduler 
In previous MC versions, we had a rather simple internal scheduler
for delayed tasks that would just keep pushing task back until desired
tick was reached.

The method it called to schedule the task changed behavior in 1.14, and now
this scheduler is not working nowhere near what it was supposed to be doing.

This was causing long delayed task to eat up CPU (In Oversleep for example)

Rewrite this to just use the CraftScheduler for scheduling delayed tasks.

Once this was fixed, it became quite clear the code that delayed ticket
additions for chunks based on distance was clearly not right, as it was
tested on the previous broken logic.

So the ticket delay process has been vastly revamped to be even smarter.
Chunks behind the player can load slower than the chunks in front of the player.
We also can delay ticket adding until one of its neighbors has loaded, as
this lets us get a smoother spiral out for the chunks (minus frustum intent).

Additionally on frustum previous commit inadvertently broke frustum trying to
fix an issue when the real fix lied elsewhere, so restore chunk priority so
it works again.
2020-06-09 03:17:25 -04:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 1 Jun 2019 13:00:55 -0700
Subject: [PATCH] Chunk debug command
Prints all chunk information to a text file into the debug
folder in the root server folder. The format is in JSON, and
the data format is described in MCUtil#dumpChunks(File)
The command will output server version and all online players to the
file as well. We do not log anything but the location, world and
username of the player.
Also logs the value of these config values (note not all are paper's):
- keep spawn loaded value
- spawn radius
- view distance
Each chunk has the following logged:
- Coordinate
- Ticket level & its corresponding state
- Whether it is queued for unload
- Chunk status (may be unloaded)
- All tickets on the chunk
Example log:
https://gist.githubusercontent.com/Spottedleaf/0131e7710ffd5d531e5fd246c3367380/raw/169ae1b2e240485f99bc7a6bd8e78d90e3af7397/chunks-2019-06-01_19.57.05.txt
For references on certain keywords (ticket, status, etc), please see:
https://bugs.mojang.com/browse/MC-141484?focusedCommentId=528273&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-528273
https://bugs.mojang.com/browse/MC-141484?focusedCommentId=528577&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-528577
diff --git a/src/main/java/com/destroystokyo/paper/PaperCommand.java b/src/main/java/com/destroystokyo/paper/PaperCommand.java
index 5acad8e44f024d3ddf5ef4fd320460ac516e0fb8..af810987846efcd2bffbd23c31481b2d31c168dd 100644
--- a/src/main/java/com/destroystokyo/paper/PaperCommand.java
+++ b/src/main/java/com/destroystokyo/paper/PaperCommand.java
@@ -28,14 +28,14 @@ public class PaperCommand extends Command {
public PaperCommand(String name) {
super(name);
this.description = "Paper related commands";
- this.usageMessage = "/paper [heap | entity | reload | version]";
+ this.usageMessage = "/paper [heap | entity | reload | version | debug | chunkinfo]";
this.setPermission("bukkit.command.paper");
}
@Override
public List<String> tabComplete(CommandSender sender, String alias, String[] args, Location location) throws IllegalArgumentException {
if (args.length <= 1)
- return getListMatchingLast(args, "heap", "entity", "reload", "version");
+ return getListMatchingLast(args, "heap", "entity", "reload", "version", "debug", "chunkinfo");
switch (args[0].toLowerCase(Locale.ENGLISH))
{
@@ -45,6 +45,21 @@ public class PaperCommand extends Command {
if (args.length == 3)
return getListMatchingLast(args, EntityTypes.getEntityNameList().stream().map(MinecraftKey::toString).sorted().toArray(String[]::new));
break;
+ case "debug":
+ if (args.length == 2) {
+ return getListMatchingLast(args, "help", "chunks");
+ }
+ break;
+ case "chunkinfo":
+ List<String> worldNames = new ArrayList<>();
+ worldNames.add("*");
+ for (org.bukkit.World world : Bukkit.getWorlds()) {
+ worldNames.add(world.getName());
+ }
+ if (args.length == 2) {
+ return getListMatchingLast(args, worldNames);
+ }
+ break;
}
return Collections.emptyList();
}
@@ -109,6 +124,12 @@ public class PaperCommand extends Command {
case "reload":
doReload(sender);
break;
+ case "debug":
+ doDebug(sender, args);
+ break;
+ case "chunkinfo":
+ doChunkInfo(sender, args);
+ break;
case "ver":
case "version":
Command ver = org.bukkit.Bukkit.getServer().getCommandMap().getCommand("version");
@@ -125,6 +146,96 @@ public class PaperCommand extends Command {
return true;
}
+ private void doChunkInfo(CommandSender sender, String[] args) {
+ List<org.bukkit.World> worlds;
+ if (args.length < 2 || args[1].equals("*")) {
+ worlds = Bukkit.getWorlds();
+ } else {
+ worlds = new ArrayList<>(args.length - 1);
+ for (int i = 1; i < args.length; ++i) {
+ org.bukkit.World world = Bukkit.getWorld(args[i]);
+ if (world == null) {
+ sender.sendMessage(ChatColor.RED + "World '" + args[i] + "' is invalid");
+ return;
+ }
+ worlds.add(world);
+ }
+ }
+
+ for (org.bukkit.World bukkitWorld : worlds) {
+ WorldServer world = ((CraftWorld)bukkitWorld).getHandle();
+
+ int total = 0;
+ int inactive = 0;
+ int border = 0;
+ int ticking = 0;
+ int entityTicking = 0;
+
+ for (PlayerChunk chunk : world.getChunkProvider().playerChunkMap.updatingChunks.values()) {
+ if (chunk.getFullChunkIfCached() == null) {
+ continue;
+ }
+
+ ++total;
+
+ PlayerChunk.State state = PlayerChunk.getChunkState(chunk.getTicketLevel());
+
+ switch (state) {
+ case INACCESSIBLE:
+ ++inactive;
+ continue;
+ case BORDER:
+ ++border;
+ continue;
+ case TICKING:
+ ++ticking;
+ continue;
+ case ENTITY_TICKING:
+ ++entityTicking;
+ continue;
+ }
+ }
+
+ sender.sendMessage(ChatColor.BLUE + "Chunks in " + ChatColor.GREEN + bukkitWorld.getName() + ChatColor.DARK_AQUA + ":");
+ sender.sendMessage(ChatColor.BLUE + "Total: " + ChatColor.DARK_AQUA + total + ChatColor.BLUE + " Inactive: " + ChatColor.DARK_AQUA
+ + inactive + ChatColor.BLUE + " Border: " + ChatColor.DARK_AQUA + border + ChatColor.BLUE + " Ticking: "
+ + ChatColor.DARK_AQUA + ticking + ChatColor.BLUE + " Entity: " + ChatColor.DARK_AQUA + entityTicking);
+ }
+ }
+
+ private void doDebug(CommandSender sender, String[] args) {
+ if (args.length < 2) {
+ sender.sendMessage(ChatColor.RED + "Use /paper debug [chunks] help for more information on a specific command");
+ return;
+ }
+
+ String debugType = args[1].toLowerCase(Locale.ENGLISH);
+ switch (debugType) {
+ case "chunks":
+ if (args.length >= 3 && args[2].toLowerCase(Locale.ENGLISH).equals("help")) {
+ sender.sendMessage(ChatColor.RED + "Use /paper debug chunks to dump loaded chunk information to a file");
+ break;
+ }
+ File file = new File(new File(new File("."), "debug"),
+ "chunks-" + DateTimeFormatter.ofPattern("yyyy-MM-dd_HH.mm.ss").format(LocalDateTime.now()) + ".txt");
+ sender.sendMessage(ChatColor.GREEN + "Writing chunk information dump to " + file.toString());
+ try {
+ MCUtil.dumpChunks(file);
+ sender.sendMessage(ChatColor.GREEN + "Successfully written chunk information!");
+ } catch (Throwable thr) {
+ MinecraftServer.LOGGER.warn("Failed to dump chunk information to file " + file.toString(), thr);
+ sender.sendMessage(ChatColor.RED + "Failed to dump chunk information, see console");
+ }
+
+ break;
+ case "help":
+ // fall through to default
+ default:
+ sender.sendMessage(ChatColor.RED + "Use /paper debug [chunks] help for more information on a specific command");
+ return;
+ }
+ }
+
/*
* Ported from MinecraftForge - author: LexManos <LexManos@gmail.com> - License: LGPLv2.1
*/
diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index 8c6550433c20c54cbe390219821ce393c5720da8..e6d08756f76360b29b29f18305e5ec84d09f2d54 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -22,7 +22,7 @@ import org.apache.logging.log4j.Logger;
public class ChunkProviderServer extends IChunkProvider {
private static final int b = (int) Math.pow(17.0D, 2.0D);
- private static final List<ChunkStatus> c = ChunkStatus.a();
+ private static final List<ChunkStatus> c = ChunkStatus.a(); static final List<ChunkStatus> getPossibleChunkStatuses() { return ChunkProviderServer.c; } // Paper - OBFHELPER
private final ChunkMapDistance chunkMapDistance;
public final ChunkGenerator<?> chunkGenerator;
private final WorldServer world;
diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
index 49178cbcebe7e7af9e9a2485ae11058fd1c6b20f..ece411feee81f96ae0462cf7643ec450cafad7a7 100644
--- a/src/main/java/net/minecraft/server/MCUtil.java
+++ b/src/main/java/net/minecraft/server/MCUtil.java
@@ -5,7 +5,13 @@ import com.destroystokyo.paper.profile.CraftPlayerProfile;
import com.destroystokyo.paper.profile.PlayerProfile;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.apache.commons.lang.exception.ExceptionUtils;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import com.google.gson.internal.Streams;
+import com.google.gson.stream.JsonWriter;
import com.mojang.authlib.GameProfile;
+import com.mojang.datafixers.util.Either;
+import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap;
import org.bukkit.Location;
import org.bukkit.block.BlockFace;
import org.bukkit.craftbukkit.CraftWorld;
@@ -14,8 +20,11 @@ import org.spigotmc.AsyncCatcher;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
+import java.io.*;
+import java.util.ArrayList;
import java.util.List;
import java.util.Queue;
+import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.LinkedBlockingQueue;
@@ -533,4 +542,170 @@ public final class MCUtil {
return null;
}
+
+ public static ChunkStatus getChunkStatus(PlayerChunk chunk) {
+ List<ChunkStatus> statuses = ChunkProviderServer.getPossibleChunkStatuses();
+ for (int i = statuses.size() - 1; i >= 0; --i) {
+ ChunkStatus curr = statuses.get(i);
+ CompletableFuture<Either<IChunkAccess, PlayerChunk.Failure>> future = chunk.getStatusFutureUnchecked(curr);
+ if (future != PlayerChunk.UNLOADED_CHUNK_ACCESS_FUTURE) {
+ return curr;
+ }
+ }
+ return null; // unloaded
+ }
+
+ public static void dumpChunks(File file) throws IOException {
+ file.getParentFile().mkdirs();
+ file.createNewFile();
+ /*
+ * Json format:
+ *
+ * Main data format:
+ * -server-version:<string>
+ * -data-version:<int>
+ * -worlds:
+ * -name:<world name>
+ * -view-distance:<int>
+ * -keep-spawn-loaded:<boolean>
+ * -keep-spawn-loaded-range:<int>
+ * -visible-chunk-count:<int>
+ * -loaded-chunk-count:<int>
+ * -verified-fully-loaded-chunks:<int>
+ * -players:<array of player>
+ * -chunk-data:<array of chunks>
+ *
+ * Player format:
+ * -name:<string>
+ * -x:<double>
+ * -y:<double>
+ * -z:<double>
+ *
+ * Chunk Format:
+ * -x:<integer>
+ * -z:<integer>
+ * -ticket-level:<integer>
+ * -state:<string>
+ * -queued-for-unload:<boolean>
+ * -status:<string>
+ * -tickets:<array of tickets>
+ *
+ *
+ * Ticket format:
+ * -ticket-type:<string>
+ * -ticket-level:<int>
+ * -add-tick:<long>
+ * -object-reason:<string> // This depends on the type of ticket. ie POST_TELEPORT -> entity id
+ */
+ List<org.bukkit.World> worlds = org.bukkit.Bukkit.getWorlds();
+ JsonObject data = new JsonObject();
+
+ data.addProperty("server-version", org.bukkit.Bukkit.getVersion());
+ data.addProperty("data-version", 0);
+
+ JsonArray worldsData = new JsonArray();
+
+ for (org.bukkit.World bukkitWorld : worlds) {
+ JsonObject worldData = new JsonObject();
+
+ WorldServer world = ((org.bukkit.craftbukkit.CraftWorld)bukkitWorld).getHandle();
+ PlayerChunkMap chunkMap = world.getChunkProvider().playerChunkMap;
+ Long2ObjectLinkedOpenHashMap<PlayerChunk> visibleChunks = chunkMap.visibleChunks;
+ ChunkMapDistance chunkMapDistance = chunkMap.getChunkMapDistanceManager();
+ List<PlayerChunk> allChunks = new ArrayList<>(visibleChunks.values());
+ List<EntityPlayer> players = world.players;
+
+ int fullLoadedChunks = 0;
+
+ for (PlayerChunk chunk : allChunks) {
+ if (chunk.getFullChunkIfCached() != null) {
+ ++fullLoadedChunks;
+ }
+ }
+
+ // sorting by coordinate makes the log easier to read
+ allChunks.sort((PlayerChunk v1, PlayerChunk v2) -> {
+ if (v1.location.x != v2.location.x) {
+ return Integer.compare(v1.location.x, v2.location.x);
+ }
+ return Integer.compare(v1.location.z, v2.location.z);
+ });
+
+ worldData.addProperty("name", world.getWorldData().getName());
+ worldData.addProperty("view-distance", world.spigotConfig.viewDistance);
+ worldData.addProperty("keep-spawn-loaded", world.keepSpawnInMemory);
+ worldData.addProperty("keep-spawn-loaded-range", world.paperConfig.keepLoadedRange);
+ worldData.addProperty("visible-chunk-count", visibleChunks.size());
+ worldData.addProperty("loaded-chunk-count", chunkMap.loadedChunks.size());
+ worldData.addProperty("verified-fully-loaded-chunks", fullLoadedChunks);
+
+ JsonArray playersData = new JsonArray();
+
+ for (EntityPlayer player : players) {
+ JsonObject playerData = new JsonObject();
+
+ playerData.addProperty("name", player.getName());
+ playerData.addProperty("x", player.locX());
+ playerData.addProperty("y", player.locY());
+ playerData.addProperty("z", player.locZ());
+
+ playersData.add(playerData);
+
+ }
+
+ worldData.add("players", playersData);
+
+ JsonArray chunksData = new JsonArray();
+
+ for (PlayerChunk playerChunk : allChunks) {
+ JsonObject chunkData = new JsonObject();
+
+ Set<Ticket<?>> tickets = chunkMapDistance.tickets.get(playerChunk.location.pair());
+ ChunkStatus status = getChunkStatus(playerChunk);
+
+ chunkData.addProperty("x", playerChunk.location.x);
+ chunkData.addProperty("z", playerChunk.location.z);
+ chunkData.addProperty("ticket-level", playerChunk.getTicketLevel());
+ chunkData.addProperty("state", PlayerChunk.getChunkState(playerChunk.getTicketLevel()).toString());
+ chunkData.addProperty("queued-for-unload", chunkMap.unloadQueue.contains(playerChunk.location.pair()));
+ chunkData.addProperty("status", status == null ? "unloaded" : status.toString());
+
+ JsonArray ticketsData = new JsonArray();
+
+ if (tickets != null) {
+ for (Ticket<?> ticket : tickets) {
+ JsonObject ticketData = new JsonObject();
+
+ ticketData.addProperty("ticket-type", ticket.getTicketType().toString());
+ ticketData.addProperty("ticket-level", ticket.getTicketLevel());
+ ticketData.addProperty("object-reason", String.valueOf(ticket.getObjectReason()));
+ ticketData.addProperty("add-tick", ticket.getCreationTick());
+
+ ticketsData.add(ticketData);
+ }
+ }
+
+ chunkData.add("tickets", ticketsData);
+ chunksData.add(chunkData);
+ }
+
+
+ worldData.add("chunk-data", chunksData);
+ worldsData.add(worldData);
+ }
+
+ data.add("worlds", worldsData);
+
+ StringWriter stringWriter = new StringWriter();
+ JsonWriter jsonWriter = new JsonWriter(stringWriter);
+ jsonWriter.setIndent(" ");
+ jsonWriter.setLenient(false);
+ Streams.write(data, jsonWriter);
+
+ String fileData = stringWriter.toString();
+
+ try (PrintStream out = new PrintStream(new FileOutputStream(file), false, "UTF-8")) {
+ out.print(fileData);
+ }
+ }
}
diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
index 980044b9a81232e7d0eab8e4947db6ca1f845c1c..47e3e618c9e683e6975fb64e1094dc7078574dae 100644
--- a/src/main/java/net/minecraft/server/PlayerChunk.java
+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
@@ -27,7 +27,7 @@ public class PlayerChunk {
public int oldTicketLevel;
private int ticketLevel;
private int n;
- private final ChunkCoordIntPair location;
+ final ChunkCoordIntPair location; // Paper - private -> package
private final short[] dirtyBlocks;
private int dirtyCount;
private int r;
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index 1d255ce3833a0ea735bedbb33ae8259751346ab2..34f470779fa5d1cf9638431253024481236c073b 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -58,7 +58,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
public final Long2ObjectLinkedOpenHashMap<PlayerChunk> updatingChunks = new Long2ObjectLinkedOpenHashMap();
public volatile Long2ObjectLinkedOpenHashMap<PlayerChunk> visibleChunks;
private final Long2ObjectLinkedOpenHashMap<PlayerChunk> pendingUnload;
- private final LongSet loadedChunks;
+ final LongSet loadedChunks; // Paper - private -> package
public final WorldServer world;
private final LightEngineThreaded lightEngine;
private final IAsyncTaskHandler<Runnable> executor;
@@ -71,7 +71,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
private final Mailbox<ChunkTaskQueueSorter.a<Runnable>> mailboxWorldGen;
private final Mailbox<ChunkTaskQueueSorter.a<Runnable>> mailboxMain;
public final WorldLoadListener worldLoadListener;
- public final PlayerChunkMap.a chunkDistanceManager;
+ public final PlayerChunkMap.a chunkDistanceManager; public final PlayerChunkMap.a getChunkMapDistanceManager() { return this.chunkDistanceManager; } // Paper - OBFHELPER
private final AtomicInteger u;
private final DefinedStructureManager definedStructureManager;
private final File w;
diff --git a/src/main/java/net/minecraft/server/Ticket.java b/src/main/java/net/minecraft/server/Ticket.java
index 77bb6b092a0763ff27f90f0401a8a81b15aebb8c..7a8397815a5b7f79f3e3a0348aeedf63fe879f8f 100644
--- a/src/main/java/net/minecraft/server/Ticket.java
+++ b/src/main/java/net/minecraft/server/Ticket.java
@@ -6,8 +6,8 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
private final TicketType<T> a;
private final int b;
- public final T identifier;
- private long d;
+ public final T identifier; public final T getObjectReason() { return this.identifier; } // Paper - OBFHELPER
+ private long d; public final long getCreationTick() { return this.d; } // Paper - OBFHELPER
protected Ticket(TicketType<T> tickettype, int i, T t0) {
this.a = tickettype;
@@ -51,6 +51,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
return this.a;
}
+ public final int getTicketLevel() { return this.b(); } // Paper - OBFHELPER
public int b() {
return this.b;
}
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