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

_ForgeUser9568687
- Join Date: 9/5/2012
- Posts: 23
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#2027 _ForgeUser9568687

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Posted Nov 15, 2012
@ray73864

if you are using 1.4.2 craftbukkit

the fact that you are using 1.88.9 and bklib 1.33 is hilarious.

Check your version above here.

Nolagg = 1.89.0 BKLib = 1.36

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RayHerring
- Join Date: 5/1/2011
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#2026 RayHerring

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Posted Nov 15, 2012
We've only just started receiving the following error for some reason:

[code]
00:12:06 [SEVERE] net.minecraft.server.ExceptionWorldConflict: Failed to check session lock, aborting
00:12:06 [SEVERE] at net.minecraft.server.WorldNBTStorage.checkSession(WorldNBTStorage.java:76)
00:12:06 [SEVERE] at net.minecraft.server.World.C(World.java:2529)
00:12:06 [SEVERE] at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:82)
00:12:06 [SEVERE] at net.minecraft.server.ChunkProviderServer.saveChunk(ChunkProviderServer.java:176)
00:12:06 [SEVERE] at net.minecraft.server.ChunkProviderServer.unloadChunks(ChunkProviderServer.java:264)
00:12:06 [SEVERE] at net.timedminecraft.server.TimedChunkProviderServer.unloadChunks(TimedChunkProviderServer.java:181)
00:12:06 [SEVERE] at net.minecraft.server.WorldServer.doTick(WorldServer.java:158)
00:12:06 [SEVERE] at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:565)
00:12:06 [SEVERE] at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:215)
00:12:06 [SEVERE] at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:495)
00:12:06 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:428)
00:12:06 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:818)
[code]

It occurs every 10mins or so, and when it does, it spits out that message about 9 times which is 2 less than the number of worlds we have.

Running NoLagg 1.88.9 with BKCommonLib 1.33 on CB: 1.4.2-R0.2-b2455

And as i say, it has only just started happening today.

Oh, forgot to mention, i thought it was the NoLagg autosave feature, because prior to the one above, it was doing:

[code]
2012-11-16 00:02:06 [SEVERE] net.minecraft.server.ExceptionWorldConflict: Failed to check session lock, aborting
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.WorldNBTStorage.checkSession(WorldNBTStorage.java:76)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.World.C(World.java:2529)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:82)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.ChunkProviderServer.saveChunk(ChunkProviderServer.java:176)
2012-11-16 00:02:06 [SEVERE] at com.bergerkiller.bukkit.nolagg.saving.AutoSaveChanger$1$2.run(AutoSaveChanger.java:60)
2012-11-16 00:02:06 [SEVERE] at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:53)
2012-11-16 00:02:06 [SEVERE] at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:531)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:215)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:495)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:428)
2012-11-16 00:02:06 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:818)
[code]

Where is has the line:
2012-11-16 00:02:06 [SEVERE] at com.bergerkiller.bukkit.nolagg.saving.AutoSaveChanger$1$2.run(AutoSaveChanger.java:60)

Is this just an issue with craftbukkit itself? And if so, would a restart of the game fix it?

Last edited by RayHerring: Nov 15, 2012

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dustinduse
- Join Date: 1/27/2012
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#2025 dustinduse

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Posted Nov 15, 2012
Examine does not work in your test build. I attempted one and it was kicking everyone from the server saying they was floating to long. not nocheatplus related i disabled still was happening. Also made CraftBook freak out for a bit. Also Worldedit during the period of this was doing random things and chunks seemed to revert. and disappear. Very strange happenings. Lag was horrible also. ran at 12tps. Second try fine without a hitch. now the server is randomly rebooting. ahh!

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Forge_User_60125114

Join Date: 5/16/2012
Posts: 15
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#2024 Posted Nov 15, 2012

@bergerkiller

This error pops up every now and then - no idea why. Used the test build in your post. It doesn't seem to affect the server badly - as it continues to function.

2012-11-15 21:11:34 [WARNING] [NoLagg] Task #11 for NoLagg v1.89.1 generated an exception
java.lang.ClassCastException: net.minecraft.server.RegionFile cannot be cast to java.lang.ref.Reference
	at com.bergerkiller.bukkit.nolagg.saving.RegionFileFlusher$1.run(RegionFileFlusher.java:30)
	at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:53)
	at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:529)
	at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)

Last edited by Forge_User_60125114: Nov 15, 2012

_ForgeUser8132885
- Join Date: 12/23/2011
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#2022 _ForgeUser8132885

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Posted Nov 15, 2012
@bergerkiller

Thanks bergerkiller, much appreciated! I am running the test build now and it seems to be all fine (so far). If I get issues with it I will report asap.

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_ForgeUser9984271
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#2021 _ForgeUser9984271

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Posted Nov 15, 2012
hey umm when i use nolagg it comes up with a massive error whenever i log on to the server could u plz help

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_ForgeUser7105870
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#2020 _ForgeUser7105870

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Posted Nov 15, 2012
@OriginalMadman Here is a test build. Both BKCommonLib and NoLagg have to be updated, and the final versions I will upload will most likely differ from the versions in this download:

https:dl.dropbox.com/u/3681706/NoLagg%20test%20build.zip

Using this semi-tested version is at your own risk. I can join the server, fly around and build stuff on this version, but there could be unknown glitches that are yet to be discovered. There are no configuration changes.

EDIT

Also, is Orebfuscator still compatible? A while back I heard comments about incompatibilities, but they have all disappeared for a while now. Anyone knows what's up? (I don't have an X-ray mod to test this out...)

Last edited by _ForgeUser7105870: Nov 15, 2012

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_ForgeUser8132885
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#2019 _ForgeUser8132885

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Posted Nov 15, 2012
Excellent, thank you bergerkiller! Can't wait! (if you have a direct link to that version so we who trust you won't have to wait for dev.bukkit review it would be awesome)

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_ForgeUser9940168
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#2018 _ForgeUser9940168

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Posted Nov 15, 2012
Fantastic work, keep it up!

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_ForgeUser7105870
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#2017 _ForgeUser7105870

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Posted Nov 15, 2012
@StanvL Next version is now undergoing some tests. It appears to support both 1.4.2 and 1.4.4, so that's even better.

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_ForgeUser8829776
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#2016 _ForgeUser8829776

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Posted Nov 15, 2012
Update NoLagg Plz!

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_ForgeUser7105870
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#2015 _ForgeUser7105870

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Posted Nov 15, 2012
@lenis0012 Ohhh that part. Yeah, some fields got changed, which I mentioned. I first have to finish TrainCarts for 1.4.2 then I will start on NoLagg compatibility. There is no beta build for CB yet, so there isn't much haste for NoLagg..yet.

@xxCoderforLife Noted.

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_ForgeUser9102437

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#2014 Posted Nov 15, 2012

I randomly get this error in the Console Log

06:24:34 [WARNING] [NoLagg] Task #14 for NoLagg v1.89.0 generated an exception
java.lang.ClassCastException: net.minecraft.server.RegionFile cannot be cast to
java.lang.ref.Reference
        at com.bergerkiller.bukkit.nolagg.saving.RegionFileFlusher$1.run(RegionF
ileFlusher.java:30)
        at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:53)
        at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(C
raftScheduler.java:345)
        at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:529)
        at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
        at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)

lenis0012
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#2013 lenis0012

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Posted Nov 14, 2012
@bergerkiller

there is some error in your chunk generation class, it seems to not be updating right with 1.4.4

i think Jeb has done some work on it wich changed the way it works

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_ForgeUser8705341
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#2012 _ForgeUser8705341

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Posted Nov 14, 2012
SEVERE Could not load 'plugins/NoLagg.jar' in folder 'plugins'

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_ForgeUser8985602
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#2011 _ForgeUser8985602

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Posted Nov 14, 2012
Whenever TNT goes of it kicks a player saying something like invalid chunk compression. hope this helps man

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_ForgeUser7105870
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#2010 _ForgeUser7105870

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Posted Nov 14, 2012
@lenis0012 @Fronix There are always ways around it. If I have to rewrite 4 classes then that be it. If I have to use reflection to hack myself into native code, so be it. :)

On a serious note, all I've seen is that the packet fields got changed/hidden. It shouldn't be too much work fixing that.

@lenis0012 Chunk generation code? What exactly do I have to look at here, because it's just now that I get messages about 1.4.4. (yay)

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_ForgeUser989663
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#2009 _ForgeUser989663

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Posted Nov 14, 2012
@lenis0012

Yeah I know but still

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lenis0012
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#2008 lenis0012

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Posted Nov 14, 2012
@Fronix

look at all the things it does
it destroys the main part but at least it helps
:P

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_ForgeUser989663
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#2007 _ForgeUser989663

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Posted Nov 14, 2012
@lenis0012

Wouldn't that kind of destroy the purpose of NoLagg? :P

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