LagMeter

Table of Contents

Lets you check the server lag, in ticks-per-second.

Bukkit version does not matter for this plugin.

Description

A lot of plugins tell you that something happens "every X seconds, depending on lag." That's because when the server is overworked, there are less than 20 ticks per second. This plugin will measure the number of ticks per second, and output it on your screen as a "Lag Meter." The plugin can also output the amount of memory free, alert those with a specific permission node when the ticks per second or free RAM goes down too far, and even measure the server's ping to google.com.

Tutorials and Reviews

LagMeter 1.9.3: Review By: UltiByte

LagMeter 0.1: Review By: BrandonHopkins

LagMeter 0.1: Review By: ValBGaming
Some of them are a little out of date, but you get the idea.

Download

CI/build (Jenkins) server
You can always pick up the latest compiled version of LagMeter on my CI server. Note that BukkitDev doesn't warrant the safety of these builds, etc, but it's all pulled from GitHub anyways, so you could compile it yourself or look at the commits. Lagmeter is more stable than Lagmeter-bleed.

Jenkins: latest builds

Stable
Version: 1.17.0
Build date: 3 March 2016

BukkitDev Download: Latest Build

Javadocs
Version: 1.15.0
Build date: 23 November 2013

Dropbox Download (zipped; standard doclet)

Source Code

GitHub: TheLunarFrog's Source

GitHub: Original Source by DemmyDemon (v.0.4)

Bugs and Feature Requests

Bug reports & Feature Requests

Features

Simple, minimum-fuzz installation
Configurable without drowning you in options
Checks the server performance
Ability to check the ping between the server and Google.com
When someone says "GAH! LAG!", you can /lag, and tell them "Dude, it's your computer sucking."
Supports Bukkit's built-in permissions system, for example via [the official plugin](http://forums.bukkit.org/threads/permissionsbukkit-official-default-groups-plugin-1000.26785/)
Support for the "old-school" Permissions, as well as PermissionsEX
Logging of the lag, if you want it.
Logging of players online, with the above, if wanted.
Suggestions?

Change Log

Commands & Permissions

Configuration Explanation

Configuration

Example output:

[####################] 20.0 TPS

...or if your server isn't doing so hot...

[##########__________] 10.0 TPS

Comments

_ForgeUser25399887
- Location: Stevenage
- Join Date: 6/2/2016
- Posts: 25
- Member Details
#490 _ForgeUser25399887

View User Profile

Send Message

Posted Jun 23, 2017
Wasn't working in 1.12 for me. Fixed in https://github.com/TheLunarFrog/LagMeter/pull/7

Rollback Post to Revision RollBack
_ForgeUser12192054
- Join Date: 9/14/2013
- Posts: 397
- Member Details
#489 _ForgeUser12192054

View User Profile

Send Message

Posted Jan 8, 2017
Thank you very much. But that time format also gives an error as follows:

The time for the time string }9m is invalid: the time string contains characters other than 0-9, w/d/h/m/s. Top-level exception: For input string: "}9"

Regading TPS Spitog Vs LM, yes, they may be measuring different (LM is always a little higher), I will inform you if the differences are big!

Thank you.

Rollback Post to Revision RollBack
_ForgeUser12192054
- Join Date: 9/14/2013
- Posts: 397
- Member Details
#487 _ForgeUser12192054

View User Profile

Send Message

Posted Jan 8, 2017
sorry for the mistake and thanks for the explanation!

http://pastebin.com/x6dmmbZb

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#488 TheLunarFrog

View User Profile

Send Message

Posted Jan 8, 2017
Quote from resoluciones >>

sorry for the mistake and thanks for the explanation!

http://pastebin.com/x6dmmbZb

On line 28, you have this:

- /lag<9m>

Change that to this:

- /lag{<>}9m

And you should be good to go.

The TPS is probably different because they're different timeframes. Based on your configuration, you have it set to poll every 2 seconds (40 ticks / 20 ticks per second = 2 seconds), and average based on 10 polls (so 20 seconds). It's also possible that Spigot measures it at different points than LagMeter does, meaning that the ticks that occur at 10:30:00 might be 10 and LagMeter records that, and then Spigot might poll it at 10:30:01 where 20 ticks occurred that second.

It could also be that the server was doing heavy processing during the past 20 seconds, as opposed to the past 1/5/15 minutes. This is compounded by the fact that averages change very little if the sample size is larger, i.e. if both polled at 10 for one second and the rest were perfect 20s, that brings the average down to 19 for 10 samples, but 19.67 for 30. This is more pronounced if there are multiple polls: if it were 3 polls of 10, the TPS average decreases to 17 and 19, respectively. A smaller sample size is not good for most statistical means, but as this use case is not statistical, it's not bad. It just gives you a better idea of how your server was doing very recently, and doesn't water down the results by including times where there may have been less things to process each tick than one of the more recent ticks that ran over its 50 millisecond "time slice."
Rollback Post to Revision RollBack
_ForgeUser12192054
- Join Date: 9/14/2013
- Posts: 397
- Member Details
#485 _ForgeUser12192054

View User Profile

Send Message

Posted Jan 8, 2017
thanks for the reply:

http://pastebin.com/MQDyC4vM

Also, why Spigot TPS is different than LagMeter TPS?

Last edited by _ForgeUser12192054: Jan 8, 2017

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#486 TheLunarFrog

View User Profile

Send Message

Posted Jan 8, 2017
Quote from resoluciones >>

thanks for the reply:

http://pastebin.com/MQDyC4vM

This is your server console. I need your configuration, i.e. the contents of the file plugins/LagMeter/settings.yml

You can redact any information that shouldn't be public, but I need a general idea of what the config looks like.

If you haven't changed the configuration since it was generated, you can just tell me instead of pasting it. I can just use that if this is the case.

Last edited by TheLunarFrog: Jan 8, 2017

Rollback Post to Revision RollBack
_ForgeUser12192054
- Join Date: 9/14/2013
- Posts: 397
- Member Details
#483 _ForgeUser12192054

View User Profile

Send Message

Posted Jan 7, 2017
Another error message:

07.01 01:47:57 [Server] WARN at java.lang.Thread.run(Unknown Source) 07.01 01:47:57 [Server] WARN at com.webkonsept.minecraft.lagmeter.TimedCommand.run(TimedCommand.java:38) 07.01 01:47:57 [Server] WARN at com.webkonsept.minecraft.lagmeter.TimedCommand.process(TimedCommand.java:13) 07.01 01:47:57 [Server] WARN java.lang.ArrayIndexOutOfBoundsException: 1 07.01 01:47:57 [Server] INFO The server's TPS has dropped below 17.0! Executing command (if configured).

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#484 TheLunarFrog

View User Profile

Send Message

Posted Jan 7, 2017
@resoluciones

Can you please paste your configuration to pastebin and provide a link to it?

Last edited by TheLunarFrog: Jan 7, 2017

Rollback Post to Revision RollBack
_ForgeUser12192054
- Join Date: 9/14/2013
- Posts: 397
- Member Details
#482 _ForgeUser12192054

View User Profile

Send Message

Posted Jan 7, 2017
wonderful plugin! It seems it's working, but it's giving some errors:

07.01 01:41:00 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.8.0_60] 07.01 01:41:00 [Server] INFO at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:542) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at net.minecraft.server.v1_11_R1.DedicatedServer.init(DedicatedServer.java:272) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at net.minecraft.server.v1_11_R1.MinecraftServer.a(MinecraftServer.java:335) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at net.minecraft.server.v1_11_R1.MinecraftServer.l(MinecraftServer.java:380) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at net.minecraft.server.v1_11_R1.MinecraftServer.t(MinecraftServer.java:419) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugins(CraftServer.java:325) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugin(CraftServer.java:375) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:271) ~[custom.jar:git-Spigot-7d78b81-70bc70b] 07.01 01:41:00 [Server] INFO at com.webkonsept.minecraft.lagmeter.LagMeter.onEnable(LagMeter.java:868) ~[?:?] 07.01 01:41:00 [Server] INFO at com.webkonsept.minecraft.lagmeter.LagMeter.registerTasks(LagMeter.java:1160) ~[?:?] 07.01 01:41:00 [Server] INFO java.lang.ArrayIndexOutOfBoundsException: 1 07.01 01:41:00 [Server] ERROR Error occurred while enabling LagMeter v1.17.0 (Is it up to date?)

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#481 TheLunarFrog

View User Profile

Send Message

Posted May 8, 2016
@GodsDead

Your ticket has been resolved.

You can grab the latest build in which it has been fixed off of my CI server - I will not be uploading a new version of LagMeter until I look into another ticket, at least.

Last edited by TheLunarFrog: May 8, 2016

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#480 TheLunarFrog

View User Profile

Send Message

Posted May 1, 2016
@GodsDead

Thanks, I'll get started on this as soon as I can.

Rollback Post to Revision RollBack
GodsDead
- Join Date: 5/24/2011
- Posts: 798
- Member Details
#479 GodsDead

View User Profile

Send Message

Posted May 1, 2016
@TheLunarFrog

LagMeter 1.17.0

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#478 TheLunarFrog

View User Profile

Send Message

Posted Apr 26, 2016
@GodsDead

Will look into this. What version are you using?

Rollback Post to Revision RollBack

GodsDead

Join Date: 5/24/2011
Posts: 798
Member Details

#477 Posted Apr 26, 2016

[22:04:34] [Server thread/INFO]: [LagMeter] The server's free memory pool has dropped below 25.0%! Executing command (if configured).
[22:04:34] [Thread-925/WARN]: java.lang.ArrayIndexOutOfBoundsException: 1
[22:04:34] [Thread-925/WARN]: 	at com.webkonsept.minecraft.lagmeter.TimedCommand.process(TimedCommand.java:13)
[22:04:34] [Thread-925/WARN]: 	at com.webkonsept.minecraft.lagmeter.TimedCommand.run(TimedCommand.java:38)
[22:04:34] [Thread-925/WARN]: 	at java.lang.Thread.run(Thread.java:745)
[22:04:34] [Thread-926/WARN]: Exception in thread "Thread-926" 
[22:04:34] [Thread-926/WARN]: java.lang.ArrayIndexOutOfBoundsException: 1
[22:04:34] [Thread-926/WARN]: 	at com.webkonsept.minecraft.lagmeter.TimedCommand.process(TimedCommand.java:13)
[22:04:34] [Thread-926/WARN]: 	at com.webkonsept.minecraft.lagmeter.TimedCommand.run(TimedCommand.java:38)
[22:04:34] [Thread-926/WARN]: 	at java.lang.Thread.run(Thread.java:745)

GodsDead
- Join Date: 5/24/2011
- Posts: 798
- Member Details
#476 GodsDead

View User Profile

Send Message

Posted Apr 16, 2016
@TheLunarFrog

http://pastebin.com/MR337crt

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#475 TheLunarFrog

View User Profile

Send Message

Posted Mar 27, 2016
@GodsDead

Please post your configuration, it looks like an issue with that.

It's trying to find the time specified on a timed command, but you don't have one

It should look something like /time day<>5m

Last edited by TheLunarFrog: Mar 27, 2016

Rollback Post to Revision RollBack

GodsDead

Join Date: 5/24/2011
Posts: 798
Member Details

#474 Posted Mar 27, 2016

issue:

[00:28:11] [Thread-73/WARN]: Exception in thread "Thread-73" 
[00:28:11] [Thread-73/WARN]: java.lang.ArrayIndexOutOfBoundsException: 1
[00:28:11] [Thread-73/WARN]: 	at com.webkonsept.minecraft.lagmeter.TimedCommand.process(TimedCommand.java:13)
[00:28:11] [Thread-73/WARN]: 	at com.webkonsept.minecraft.lagmeter.TimedCommand.run(TimedCommand.java:38)
[00:28:11] [Thread-73/WARN]: 	at java.lang.Thread.run(Thread.java:745)

TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#473 TheLunarFrog

View User Profile

Send Message

Posted Mar 2, 2016
@Culvanen

Now that I've had time to look into this, I know what the problem is and how I'm going to fix it.

The problem is that the old way that we used to get the amount of online players has been replaced, but the old way is gone and the new one can't be used in the same way. I will be correcting this today.

The reason it used player counts at all is that it tells you how many players are online (an old feature request) in the logs (when that feature is enabled). This code is located in the class that polls the server's TPS (i.e. the core of it), so that's why it broke.

For now, if you disable player logging, it should work. It's an easy fix, but I have to get a development environment set up again and then wait on bukkitdev approval.

Thanks for the report!

Rollback Post to Revision RollBack
_ForgeUser20238707
- Join Date: 5/12/2015
- Posts: 25
- Member Details
#472 _ForgeUser20238707

View User Profile

Send Message

Posted Mar 2, 2016
@TheLunarFrog

View this: http://pastebin.com/mGeGMkMp

Thanks !

Rollback Post to Revision RollBack
TheLunarFrog
- Location: Brecksville, Ohio, USA
- Join Date: 4/18/2010
- Posts: 255
- Member Details
#471 TheLunarFrog

View User Profile

Send Message

Posted Mar 1, 2016
@Culvanen

I will look into this. Do you happen to have a stack trace or error?

Rollback Post to Revision RollBack
To post a comment, please login or register a new account.

Project ID

31172
Created

Aug 25, 2011
Last Released File

Mar 2, 2016
Total Downloads

296,488
License

GNU General Public License ver...

LagMeter 1.17.0
Mar 2, 2016
LagMeter 0.9a
Nov 26, 2011

Bukkit

LagMeter

Bukkit Plugins

LagMeter

Table of Contents

Lets you check the server lag, in ticks-per-second.

Bukkit version does not matter for this plugin.

Description

Tutorials and Reviews

Download

Source Code

Bugs and Feature Requests

Features

Change Log

Commands & Permissions

Configuration Explanation

Comments

About This Project

Categories

Members

Recent Files

Bukkit