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Some of them are a little out of date, but you get the idea.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

TheLunarFrog
- Location: Brecksville, Ohio, USA
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#136 TheLunarFrog

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Posted Aug 9, 2012
@Scripthen

Edit: Fixed in next version. If you want it before it's approved, download it via the dropbox link.

Last edited by TheLunarFrog: Aug 9, 2012

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_ForgeUser8474398

Join Date: 2/23/2012
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#135 Posted Aug 9, 2012

Error creating folder.

Linux Mint MATE x64 - Linux 3.2 x64

OpenJDK 1.6

CB version:

git-Bukkit-1.3.1-R1.0-7-g69d634a-b2326jnks (MC: 1.3.1) (Implementing API version 1.3.1-R1.1-SNAPSHOT)

16:09:27 [INFO] [LagMeter] Enabling LagMeter v1.9.0
16:09:27 [INFO] [LagMeter 1.9.0] Logs folder not found. Creating one for you.
16:09:27 [INFO] [LagMeter 1.9.0] Logs folder created.
16:09:27 [INFO] [LagMeter] Using logs folder. This will create a new log for each day (it might log data from tomorrow in today's file if you leave the server running without reloading/restarting).
16:09:27 [SEVERE] java.io.IOException: No such file or directory
16:09:27 [SEVERE] 	at java.io.UnixFileSystem.createFileExclusively(Native Method)
16:09:27 [SEVERE] 	at java.io.File.createNewFile(File.java:900)
16:09:27 [SEVERE] 	at com.webkonsept.minecraft.lagmeter.LagMeterLogger.beginLogging(LagMeterLogger.java:130)
16:09:27 [SEVERE] 	at com.webkonsept.minecraft.lagmeter.LagMeterLogger.enable(LagMeterLogger.java:41)
16:09:27 [SEVERE] 	at com.webkonsept.minecraft.lagmeter.LagMeterLogger.enable(LagMeterLogger.java:49)
16:09:27 [SEVERE] 	at com.webkonsept.minecraft.lagmeter.LagMeter.onEnable(LagMeter.java:78)
16:09:27 [SEVERE] 	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
16:09:27 [SEVERE] 	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:365)
16:09:27 [SEVERE] 	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
16:09:27 [SEVERE] 	at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:265)
16:09:27 [SEVERE] 	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:247)
16:09:27 [SEVERE] 	at net.minecraft.server.MinecraftServer.i(MinecraftServer.java:296)
16:09:27 [SEVERE] 	at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:275)
16:09:27 [SEVERE] 	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:225)
16:09:27 [SEVERE] 	at net.minecraft.server.DedicatedServer.init(DedicatedServer.java:140)
16:09:27 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:378)
16:09:27 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
16:09:27 [INFO] [LagMeter 1.9.0] Logging is disabled because: IOException opening logfile
16:09:27 [INFO] [LagMeter 1.9.0] Enabled!  Polling every 40 server ticks.  Logging to /media/Storage2/Jolly Nights/plugins/LagMeter\logs/lag08-09-2012.log

Last edited by _ForgeUser8474398: Aug 9, 2012

_ForgeUser311424
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#134 _ForgeUser311424

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Posted Aug 9, 2012
Error log folder again !

Create folder in root server folder "null;logs"

12:17:34 [INFO] [LagMeter] Using logs folder. This will create a new log for each day (it might log data from tomorrow in today's file if you leave the server running without reloading/restarting). 12:17:34 [SEVERE] java.io.IOException: The system cannot find the path specified

12:17:34 [SEVERE] at java.io.WinNTFileSystem.createFileExclusively(NativeMethod) 12:17:34 [SEVERE] at java.io.File.createNewFile(Unknown Source) 12:17:34 [SEVERE] at com.webkonsept.minecraft.lagmeter.LagMeterLogger.beginLogging(LagMeterLogger.java:130) 12:17:34 [SEVERE] at com.webkonsept.minecraft.lagmeter.LagMeterLogger.enable(LagMeterLogger.java:41) 12:17:34 [SEVERE] at com.webkonsept.minecraft.lagmeter.LagMeterLogger.enable(LagMeterLogger.java:49) 12:17:34 [SEVERE] at com.webkonsept.minecraft.lagmeter.LagMeter.onEnable(LagMeter.java:78) 12:17:34 [SEVERE] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:215) 12:17:34 [SEVERE] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) 12:17:34 [SEVERE] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:386) 12:17:34 [SEVERE] at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:264) 12:17:34 [SEVERE] at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:246) 12:17:34 [SEVERE] at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:377) 12:17:34 [SEVERE] at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:364) 12:17:34 [SEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:198) 12:17:34 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:428) 12:17:34 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) 12:17:34 [INFO] [LagMeter 1.9.0] Logging is disabled because: IOException opening logfile

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_ForgeUser9364140
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#133 _ForgeUser9364140

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Posted Aug 9, 2012
192 blows up on my console after a few minutes. Same as the version the other day. 1.31 Server 2008R2 32 gigs ram, Ivy bridge

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TheLunarFrog
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#132 TheLunarFrog

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Posted Aug 8, 2012
Fixed. Uploading.

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PikaMug
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#131 PikaMug

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Posted Aug 8, 2012
I'm having the same issue as SavageCore. Worked fine before we updated to 1.9.0.

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_ForgeUser8270052
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#130 _ForgeUser8270052

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Posted Aug 8, 2012
You're probably already aware of this, but http://pastebin.com/J7NbLZAk

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TheLunarFrog
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#129 TheLunarFrog

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Posted Aug 8, 2012
You should be able to disable the logs folder feature. Try adding useLogsFolder: false under the already-existing log category. If that doesn't work, try capitalizing the 'u' in 'use'. I can't check right now; I'm on a machine that doesn't have my code on it. I'll fix this later tonight.

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Forge_User_20681073
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#128 Forge_User_20681073

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Posted Aug 8, 2012
I also get null\logs created in root dir instead of /plugins/lagmeter/logs

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TheLunarFrog
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#127 TheLunarFrog

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Posted Aug 7, 2012
@TnTBass

The NPE is from the server being unable to create a logfile. As for the inability to create a logfile, you probably need to give the current user you're using for the server the read/write/create permissions for the plugins folder. I'll toy with this some and see if I can find a solution.

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_ForgeUser9269774
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#126 _ForgeUser9269774

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Posted Aug 7, 2012
My findings as well... on Linux:

2012-08-07 18:07:34 [INFO] [LagMeter 1.9.0] Enabled! Polling every 40 server ticks. Logging to /home/minecraft/bukkit/plugins/LagMeter\logs/lag08-07-2012.log

Maybe it doesn't like the backwards \ before logs? It also created a directory named "null\logs":

[minecraft@minecraft bukkit]# ls -l ... drwxrwxr-x. 2 minecraft minecraft 4096 Aug 7 17:51 null\logs

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_ForgeUser8741012
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#125 _ForgeUser8741012

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Posted Aug 7, 2012
@TnTBass

Same as for me. But the plugin works just fine ;)

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_ForgeUser5803084
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#124 _ForgeUser5803084

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Posted Aug 7, 2012
@TheLunarFrog
If the logs folder doesn't exist, it kicks up an error:
http://pastebin.com/dsmRysbw

Using Lagmeter 1.9.0

Edit: Scratch that, created the "logs" folder, still got an error:
http://pastebin.com/KCEUtBBQ

Edit #2:
Found this on my console when I came back later (most likely due to the logs folder issue):
http://pastebin.com/aamHPwUY

None of this is at all a big deal, just wanted to share my findings. :)

Last edited by _ForgeUser5803084: Aug 7, 2012

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TheLunarFrog
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#122 TheLunarFrog

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Posted Jul 25, 2012
@Kemren

I don't think it's implemented in the current version yet.

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_ForgeUser4606107
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#121 _ForgeUser4606107

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Posted Jul 25, 2012
Ooh, there's an alert thing already? How do I turn it on? =D

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TheLunarFrog
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#120 TheLunarFrog

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Posted Jul 23, 2012
@Kemren

The alert thing is already done, but I'm currently trying to juggle this with many, many other things, such as moving house, schooling, other plugins, etc. and I have to fix an exception that's caused every time LagMeter logs.

As for the average thing, we'll see. LagMeter actually has something that could be used for this already, so I might be able to implement that.

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_ForgeUser4606107
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#119 _ForgeUser4606107

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Posted Jul 23, 2012
Ooh, it might also be cool if the plugin recorded every 5th or 10th cycle into a a log, that way you could check the lagmeter log to see how the server's performance has been. Maybe it could even average them to give you an average "Server Lag" reading that might be low on servers that are lagging way too much?

I know, the update might turn into quite a project if you tried to include that, but i still think it'd be cool.

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_ForgeUser4606107
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#118 _ForgeUser4606107

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Posted Jul 22, 2012
Could use an update. Not because it's actually malfunctioning, but simply to get that alert thing implemented. I love that idea.

Preferably have it be by permission. So that only people with lagmeter.alert can see the alert, or something like that. =)

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TheLunarFrog
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#117 TheLunarFrog

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Posted Jul 18, 2012
@MrPiggy54

What do you mean? If you want a little button that fixes all the server's lag, you're living in a fantasy world. The plugin is as described.

Last edited by TheLunarFrog: Jul 18, 2012

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_ForgeUser8933499
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#116 _ForgeUser8933499

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Posted Jul 17, 2012
does this clear lag?

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