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Some of them are a little out of date, but you get the idea.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

_ForgeUser9505073
- Join Date: 8/30/2012
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#383 _ForgeUser9505073

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Posted Jun 12, 2013
Works great with Libigot also, any thoughts on a script or otherwise that can parse the log and reboot the server if the TPS drops below a defined # ? Running on Ubuntu.

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TheLunarFrog
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#382 TheLunarFrog

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Posted Jun 3, 2013
@TanveerGT5

Yes.

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_ForgeUser7341463
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#381 _ForgeUser7341463

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Posted Jun 3, 2013
is this spigot compatible

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TheLunarFrog
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#380 TheLunarFrog

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Posted Jun 2, 2013
@TanveerGT5

I would imagine so.

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_ForgeUser7341463
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#379 _ForgeUser7341463

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Posted Jun 2, 2013
does this work along side ClearLagg? so I can run them both

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TheLunarFrog
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#378 TheLunarFrog

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Posted May 15, 2013
@Zelnehlun_

Thanks for the detail. This has been fixed in the next version.

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_ForgeUser7367439

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#376 Posted May 15, 2013

I am using Spigot #855 and the latest LagMeter plugin when stopping the server the following error occurs:

2013-05-15 19:09:01 [INFO] [LagMeter] Disabling LagMeter v1.13.0
2013-05-15 19:09:01 [INFO] [0;33;22m[LagMeter 1.13.0] [0;32;1mDisabled![m
2013-05-15 19:09:01 [SEVERE] java.lang.NullPointerException
2013-05-15 19:09:01 [SEVERE] 	at main.java.com.webkonsept.minecraft.lagmeter.LagMeterLogger.closeLog(LagMeterLogger.java:59)
2013-05-15 19:09:01 [SEVERE] 	at main.java.com.webkonsept.minecraft.lagmeter.LagMeterLogger.disable(LagMeterLogger.java:68)
2013-05-15 19:09:01 [SEVERE] 	at main.java.com.webkonsept.minecraft.lagmeter.LagMeter.onDisable(LagMeter.java:99)
2013-05-15 19:09:01 [SEVERE] 	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:219)
2013-05-15 19:09:01 [SEVERE] 	at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:481)
2013-05-15 19:09:01 [SEVERE] 	at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:402)
2013-05-15 19:09:01 [SEVERE] 	at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:395)
2013-05-15 19:09:01 [SEVERE] 	at org.bukkit.craftbukkit.v1_5_R3.CraftServer.disablePlugins(CraftServer.java:301)
2013-05-15 19:09:01 [SEVERE] 	at net.minecraft.server.v1_5_R3.MinecraftServer.stop(MinecraftServer.java:340)
2013-05-15 19:09:01 [SEVERE] 	at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:436)
2013-05-15 19:09:01 [SEVERE] 	at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)

Log is set to false in the LagMeter config.

Pastebin: http://pastebin.com/niPHSPA1

Thanks for reading.

Last edited by _ForgeUser7367439: May 15, 2013

TheLunarFrog
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#375 TheLunarFrog

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Posted May 11, 2013
Preview update notes are available for LagMeter version 1.13.1 in the changelog. In addition, much in-depth detail on the API which has been introduced in 1.13.1 has been added on the new API page.

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TheLunarFrog
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#374 TheLunarFrog

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Posted May 11, 2013
Any developers that hook LagMeter will have their plugins broken if they use

LagMeter.p

to access LagMeter's methods. Instead, use

LagMeter.getInstance()

This is the exact same as using the here-to-fore available static accessor; however, this change was necessary, as some people were annulling the value of the accessor, causing any other plugins to throw a NullPointerException whenever they tried to access LagMeter's methods.
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_ForgeUser7862344
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#373 _ForgeUser7862344

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Posted May 10, 2013
@TheLunarFrog

ah so thats why, i had no idea what caused it, just remembered that i had seem the same error on many other plugins in the past. thanks for clarifying it :)

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TheLunarFrog
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#372 TheLunarFrog

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Posted May 7, 2013
@olmok

Already fixed in next version I believe.

@Marium0505

Works fine.

@mal67

Not my plugin's fault. You're running java 6 and the plugin is made with java 7. Wait for the next version or update to java 7.

Last edited by TheLunarFrog: May 7, 2013

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_ForgeUser10122760
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#371 _ForgeUser10122760

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Posted May 6, 2013
Hey,

Trying to poll the data from LagMeter over rcon, but failing :(

It seems the response it sent to the console, rather than the rcon - is this fixable? Am collection usage data for a few of our servers via rcon, would love to be able to collect tps/mem data for our Bukkit-servers too :)

Olmok

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_ForgeUser7862344
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#370 _ForgeUser7862344

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Posted May 5, 2013
not working in 1.5.2 R0.1 unsupported major minor version junk from java as usual

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_ForgeUser7746350
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#369 _ForgeUser7746350

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Posted May 5, 2013
Does it work on 1.5.2?

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TheLunarFrog
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#368 TheLunarFrog

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Posted May 3, 2013
Java 6 support may be delayed. There are compliance discrepancies (i.e. switching on a String, since Strings in Java 6 are memory locations of char arrays, while in Java 7 it's an actual type comparison), which means I do need to proofread the code and fix any errors which would occur by switching back to JRE 1.6. This could take time, since most of my code is being written from a phone.

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TheLunarFrog
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#367 TheLunarFrog

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Posted Apr 18, 2013
@ha11oga11o

Like I said (@TheLunarFrog), this change has already been added.

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_ForgeUser7479931
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#366 _ForgeUser7479931

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Posted Apr 17, 2013
@TheLunarFrog

Please dont forget to add node in cfg so we can actually change ping domain or IP. Cause firewalls. I had post before regarding that feature.

Thnx :)

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TheLunarFrog
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#365 TheLunarFrog

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Posted Apr 17, 2013
@mattmess1221

Fixed in next version; sorry about that.

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killjoy1221
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#364 killjoy1221

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Posted Apr 17, 2013
ping isn't working on linux systems. I think it's sending to the terminal "ping hops www.google.com" but this sends back a "connect: Invalid argument" error.

It should be "ping -s packetsize -c count google.com"

I assume it works perfectly on windows the way it is currently.

Last edited by killjoy1221: Apr 17, 2013

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TheLunarFrog
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#363 TheLunarFrog

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Posted Apr 11, 2013
@ha11oga11o

Sorry about the confusion. No offense was intended by my original post, just seemed kind of strange to me to see a server log with a bunch of empty lines for commands.

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