NoLagg

Table of Contents

Version: 1.90.4 | CB 1.7.2

Quote from lenis0012:
NoLagg has not been updated since 1.7.10, for more info, check BKCommonLib

Description

NoLagg is made out of multiple completely separate components which you can enable and disable freely. Together they offer:

Send chunks more gracefully with lowered network stress and reduced processing spikes Read more...
Remove entities, resend chunks in case of chunk holes and clean up server memory Read more...
Examine server tick rate performance with deep view into per-tick processes of the server Read more...
Stop a large amount of items from spawning and spawn at a later time to avoid frozen clients Read more...
Stack items with a configurable per-world radius Read more...
Fix lighting errors that cause clients to recalculate lighting (and thus lag) Read more...
Keep track of server performance such as entities, tick rate, memory and more Read more...
Fix various bugs the server has (Patches component)
Schedule autosaves and force data to be written to disk to prevent data loss on server crash (Saving component)
Limit the amount of entities allowed to spawn per world or globally Read more...
Watch events closely to warn when plugins execute main-thread methods from another thread Read more...
Show a detailed message explaining the cause for a server freeze (lock) [read more]
New TNT execution algortithm that is not only more efficient, but also avoids server freezes Read more...

Important

When first installing NoLagg, open up config.yml and disable components you do not need. This is very important, as some components may conflict with other plugins you use, or may not function on the type of demand you have. If you get a warning message [Severe] followed up with a stack trace in the log, this has to do with the main thread not having responded within 10 seconds. The warning is NOT an error and is no bug, and not a bug related to NoLagg. To disable this feature, disable 'threadlocknotifier' in the config.yml. This feature is mainly intended to notify you what plugin is causing the server to freeze, may it ever happen. It is used to debug plugins in general, as they may get stuck for whatever reason. If NoLagg DOES show up in there, it is a bug you should report.

FAQ

Before reporting any problems, errors, issues, lag or even commenting about it, please read the information on this page very carefully. It makes my and your life a lot easier if you do.

Separating into jar files

NoLagg consists of multiple components you can individually enable and disable. Reasons for not publishing it as a separate jar file for every component can be read here. Please don't ask to separate the components, I will just link you to here.

Spigot server

Not all components are needed when you use the Spigot server. The ItemStacker, ItemBuffer, Spawn Limiter, Thread Checker and Thread Lock Notifier components are not needed, since Spigot has it's own implementations to deal with that. If you still wish to use one of these components, you can, but it's best to disable the Spigot alternative then.

The other components (such as TNT, Chunks, Lighting, Common, etc.) are not implemented in Spigot (yet?) and offer additional functionality.

PTweaks

Since people keep asking about this, I went ahead and compared the two plugins. I am not going to discuss which is better in functionality, I'm just going to state which features overlap and which do not. Both plugins offer a TNT-lag solving solution, feel free to choose which solution you like better. (the solutions are different) Both plugins also offer a way to change when and how chunks are saved, NoLagg adds to this that you can configure when the server writes data to disk. PTweaks offers a way of showing used memory, NoLagg Monitor too with a bit more information. Again, preference. Chunk Persistence is something PTweaks offers and NoLagg does not. Reason I excluded it from NoLagg is that the implementation used up more processing power than that it solved (I did have this for a while). If you want to give it a try, PTweaks is your answer. Monster Limiter is incorporated in NoLagg as well but then for all entities, and more options. ChunkEdits is a tricky one: NoLagg chunks does something similar, with the difference being that it also changes at what rate chunks are sent, which is the main feature NoLagg chunks offers. In addition, the ability to increase the amount of threads running to process chunk packets and the re-using of packet raw data offers some benefits PTweaks does not offer.

Then there are a lot of other features NoLagg has and PTweaks does not, such as examining server tick rate, item stacker, item buffer, fixing lighting, cleaning up server memory, resending chunks, removing entities on command and others (see description).

In short: Both plugins offer some overlapping features, and you need to pay close attention to the configuration of PTweaks and NoLagg and disable things that conflict. Having two TNT explosion altering plugins is going to have strange results, for example. Compare the functionality, decide, and enable in NoLagg what you do not want in PTweaks, and vice versa.

NoLagg showing up in error stack traces

The examine component inserts various hooks into the server to gather measurements. Specifically, you will find that the following lines show up now and then. These hook classes do absolutely nothing when not examining and can not be the cause for any issues, unless the stack trace ends there (first line after the exception shows this stack trace)

org.timedbukkit.craftbukkit.*
com.bergerkiller.bukkit.common.internal.ChunkProviderServerHook

Video

Here is a video by BlueDevonMovies (lenis0012):

Metrics

This plugin sends server count statistics to MCStats.org. You can (globally) opt out in the PluginMetrics/config.yml file.

Development Builds

DevBukkit Disclaimer
Click here to Download development builds of this Plugin

Comments

_ForgeUser7105870
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#489 _ForgeUser7105870

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Posted Feb 5, 2012
@Lezyamin Please do post the entire error (wish people would start doing that by themselves for once...)

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_ForgeUser7105870
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#488 _ForgeUser7105870

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Posted Feb 5, 2012
@SERVERCONSOLE mh you're right, bust have been a mistake I made when converting the entire configuration around.

@godgodgodgo This time you'd better let the plugin re-generate it, since I changed quite a lot of nodes. This way the order of the nodes is correct, and you won't see removed nodes.

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_ForgeUser8028390
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#487 _ForgeUser8028390

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Posted Feb 5, 2012
Just noticed with NoLagg 1.6 and CB#1846 - items are no longer stacking - let me know if you need any more info to check this out.

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_ForgeUser7359844
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#486 _ForgeUser7359844

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Posted Feb 5, 2012
I used this plugin, but then decided to remove it, now i seem to get errors in my console, and my server lags even more!

The errors I get are : SEVERE java.util.ConcurrentModificationException

Please can someone help me, as my server is lagging even more!

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ChrisMLane
- Join Date: 5/19/2011
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#485 ChrisMLane

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Posted Feb 5, 2012
I always leave the config as default, is this a good idea?

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ChrisMLane
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#484 ChrisMLane

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Posted Feb 5, 2012
So we have to place the BKCommonLib 1.01.jar file in our plugins folder now too?

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_ForgeUser7105870
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#483 _ForgeUser7105870

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Posted Feb 5, 2012
@predawnia This chunk loading issue started a few days (hours?) ago, maybe an older Orebfuscator version does work. Downgrading NoLagg won't work, since the issue lies in Orebfuscator right now.

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_ForgeUser1573474
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#482 _ForgeUser1573474

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Posted Feb 5, 2012
I am so confused :)
Is it safe to use NoLagg 1.6 and Orebfuscator 1.3.5 together?
Which version would go nicely with each other?
Any advise will help. Thanks!

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_ForgeUser7105870
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#481 _ForgeUser7105870

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Posted Feb 5, 2012
@Gnintendo That's a known bug in Orbfuscator, it will be fixed fairly soon.

Last edited by _ForgeUser7105870: Feb 5, 2012

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_ForgeUser6889088
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#480 _ForgeUser6889088

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Posted Feb 5, 2012
I'm so happy to see the new mobspawner limit feature! =D Now we can make mob-related traps and contraptions on a creative map, if we config it. THANKS for adding that!

No major errors that I've noticed so far with 1.6; Although TNT seems to not throw other TNT as far as the 1.59 version did. Not horribly important, just an odd one.

I'm still so surprised you added the mobspawner idea. Again, thanks! ;D

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_ForgeUser8061871

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#479 Posted Feb 4, 2012

        at lishid.orebfuscator.utils.Calculations.Obfuscate(Calculations.java:351)
        at lishid.orebfuscator.utils.Calculations.Obfuscate(Calculations.java:219)
        at com.bergerkiller.bukkit.nolagg.sending.ChunkCompressionThread.getCompressedPacket(ChunkCompressionThread.java:138)
        at com.bergerkiller.bukkit.nolagg.sending.ChunkCompressionThread.run(ChunkCompressionThread.java:176)
        at com.bergerkiller.bukkit.common.AsyncTask$1.run(AsyncTask.java:20)
00:09:46 [INFO] This error is logged only once: it could have occurred multiple times by now.
00:09:46 [INFO] Please contact one of the authors of plugin 'BKCommonLib': bergerkiller
00:09:46 [WARNING] Could not properly handle event CHUNK_LOAD:
java.lang.IllegalAccessError: Synchronized code got accessed from another thread: com.bergerkiller.bukkit.common.AsyncTask$1
        at org.bukkit.event.Listener.onChunkLoad(Listener:0)
        at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.bukkit.plugin.java.JavaPluginLoader$103.execute(JavaPluginLoader.java:1024)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:57)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:453)
        at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:103)
        at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:117)
        at net.minecraft.server.World.getChunkAt(World.java:337)
        at net.minecraft.server.World.getTypeId(World.java:284)
        at lishid.orebfuscator.utils.Calculations.GetAjacentBlocksTypeID(Calculations.java:146)
        at lishid.orebfuscator.utils.Calculations.GetAjacentBlocksTypeID(Calculations.java:163)
        at lishid.orebfuscator.utils.Calculations.GetAjacentBlocksTypeID(Calculations.java:163)
        at lishid.orebfuscator.utils.Calculations.Obfuscate(Calculations.java:351)
        at lishid.orebfuscator.utils.Calculations.Obfuscate(Calculations.java:219)
        at com.bergerkiller.bukkit.nolagg.sending.ChunkCompressionThread.getCompressedPacket(ChunkCompressionThread.java:138)
        at com.bergerkiller.bukkit.nolagg.sending.ChunkCompressionThread.run(ChunkCompressionThread.java:176)
        at com.bergerkiller.bukkit.common.AsyncTask$1.run(AsyncTask.java:20)
00:09:46 [INFO] This error is logged only once: it could have occurred multiple times by now.
00:09:46 [INFO] Please contact one of the authors of plugin 'BKCommonLib': bergerkiller
00:09:46 [WARNING] Could not properly handle event CHUNK_LOAD:
java.lang.IllegalAccessError: Synchronized code got accessed from another thread: com.bergerkiller.bukkit.common.AsyncTask$1
        at org.bukkit.event.Listener.onChunkLoad(Listener:0)
        at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.bukkit.plugin.java.JavaPluginLoader$103.execute(JavaPluginLoader.java:1024)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:57)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:453)
        at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:103)
        at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:117)
        at net.minecraft.server.World.getChunkAt(World.java:337)
        at net.minecraft.server.World.getTypeId(World.java:284)
        at lishid.orebfuscator.utils.Calculations.GetAjacentBlocksTypeID(Calculations.java:146)
        at lishid.orebfuscator.utils.Calculations.GetAjacentBlocksTypeID(Calculations.java:165)
        at lishid.orebfuscator.utils.Calculations.GetAjacentBlocksTypeID(Calculations.java:163)
        at lishid.orebfuscator.utils.Calculations.Obfuscate(Calculations.java:351)
        at lishid.orebfuscator.utils.Calculations.Obfuscate(Calculations.java:219)
        at com.bergerkiller.bukkit.nolagg.sending.ChunkCompressionThread.getCompressedPacket(ChunkCompressionThread.java:138)
        at com.bergerkiller.bukkit.nolagg.sending.ChunkCompressionThread.run(ChunkCompressionThread.java:176)
        at com.bergerkiller.bukkit.common.AsyncTask$1.run(AsyncTask.java:20)

some errors on my server using nolagg and orebfuscator and spout (?)

_ForgeUser6833318
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#478 _ForgeUser6833318

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Posted Feb 4, 2012
@RevoMods

its much more wise and helpful to say which bukkit you are running and which NoLagg..

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_ForgeUser7451059
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#477 _ForgeUser7451059

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Posted Feb 4, 2012
I ran this and no chunks would load at all.

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_ForgeUser7105870
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#476 _ForgeUser7105870

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Posted Feb 4, 2012
Until 1.60 is still awaiting approval here on Bukkit dev, you can download 1.60 from GitHub as well. Something got changed in R3 of CraftBukkit, 1.60 should fix all of that.

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_ForgeUser7105870
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#475 _ForgeUser7105870

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Posted Feb 4, 2012
@lishid It can slow the server down (but not really much, it simply compares the current thread)

It needs to be added in quite a lot of locations, and looking at the buggy state of CraftBukkit, I don't think it is needed to commit anything new to them. Waiting for the 'real' server software to be finished (Spout and CraftBukkit are coming a long way)

Also, uploaded 1.60. Other than a lot of fixes and tweaks, it now uses my utility library, which is shared among multiple of my plugins.

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_ForgeUser7455464
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#474 _ForgeUser7455464

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Posted Feb 4, 2012
@bergerkiller

Wait... Why don't you integrate the cross-thread checks into CraftBukkit? You know, see what the bukkit devs think about it, with pull requests (or a forum post).

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_ForgeUser7455464
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#473 _ForgeUser7455464

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Posted Feb 4, 2012
@bergerkiller

PM is slow, use something like skype, or IRC.

EDIT: I don't see how calling isChunkLoaded would help. I will need to load that chunk anyways.

Also, the method you sent me would not help. I need that chunk to be loaded/generated in any way to continue obfuscation, or else there might be stuff that gets wrongly un-obfuscated.

Last edited by _ForgeUser7455464: Feb 4, 2012

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_ForgeUser7105870
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#472 _ForgeUser7105870

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Posted Feb 4, 2012
@lishid See this line in CraftBukkits source code

Is it stated ANYWHERE in the documentation that this event will be called from multiple threads? Is it known to anyone? Nope. Write a Bukkit post stating that this is the case, make it commonly known, THEN I will remove it. Sorry but, if no one knows of it being called async, it is ridiculous to assume 'like that' that this is the case.

And it is synchronized because plugins may want to GET a chunk. Loading one is impossible though. Always use isCHunkLoaded before using it. See this example.

it is 100% thread safe, since the Chunk map used is synchronized. It will return null if not loaded. When that happens, abort the mission. It's simply.

Otherwise, allow me to specify the chunk object to use during your obfuscation. I store (unloaded) chunks when sending and can pass this to you.

If you still don't understand why you can't load chunks async, PM me and I will guide you along all made calls to prove my point.

Last edited by _ForgeUser7105870: Feb 4, 2012

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_ForgeUser7455464
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#471 _ForgeUser7455464

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Posted Feb 4, 2012
@bergerkiller

class World, method getChunkAt(i, j)

synchronized (this.chunkLock) { .... }

Looks pretty safe to me...

If a plugin keeps a map of chunks, it is supposed to add and remove with the load and unload events. If it doesn't, then it's their fault.

In any case, that call MUST be made in order to properly obfuscate the chunk. If you think it's not possible to call it from another thread, give me a solution or don't throw that exception.

Last edited by _ForgeUser7455464: Feb 4, 2012

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_ForgeUser7105870
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#470 _ForgeUser7105870

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Posted Feb 4, 2012
@lishid WRONG! Ow so wrong :) Bukkit may have secured it, but the load event will flow through all other plugins. Most of those plugins keep an (unsynchronized) mapping of chunks vs the data attached to it. When you load from another thread, these plugins will start to throw errors, and people will come and cry to those poor developers. Those developers wondering 'what the buck?', while you sit in your chair laughing wildly at your async chunk loading.

No really, it is NOT thread safe, unless they clearly state that the chunk load/unload event can be called from multiple threads! Most plugin developers don't know!

(I add synchronized checks all around, but a lot of plugins don't and shouldn't have to)

Then there is chunk populators. If your chunk load cuases a chunk to be generated, then the chunk populator(s) will run from another thread, possibly crashing the server when altering already loaded chunks managed on the main thread.

Also, remember 'don't call bukkit methods from another thread'? Well, world.getTypeId and world.setTypeId is one of them.

Last edited by _ForgeUser7105870: Feb 4, 2012

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Project ID

32271
Created

Sep 19, 2011
Last Released File

Jan 1, 2014
Total Downloads

1,306,435
License

GNU General Public License ver...

v1.90.4
Jan 1, 2014
v1.65
Feb 18, 2012

Bukkit

NoLagg

Bukkit Plugins

NoLagg

Table of Contents

Description

Important

FAQ

Separating into jar files

Spigot server

PTweaks

NoLagg showing up in error stack traces

Video

Metrics

Links

Development Builds

Comments

About This Project

Categories

Members

Recent Files

Bukkit