Bukkit High CPU Usage

Discussion in 'Bukkit Help' started by sprocket888, Jun 20, 2012.

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  1. Offline

    sprocket888

    I have been running bukkit 1.2.5R1.0 for quite a while. I recently updated to the 1.2.5R4.0 and noticed that the CPU usage has rocketed up and lag makes the server unusable. When I used to start my server it was taking 11sec to fire up, under R4.0 that number jumped to 150sec.

    In order to troubleshoot I removed ALL plugins and tested, the start time was 135sec. I then tried every build between the current recommended build and the R1.0.

    What I found was that build #2183 was when it all went bad.

    With no plugins whatsoever, just a fresh bukkit install

    #2182 starts in 5sec
    #2183 starts in 110sec

    I have this server running on 8 core AMD Operton Processor with 16GB of RAM. It is a dedicated Debian machine with no other applications running.

    Is there anything I can do that might help in figuring out what happened in build 2183 that has rendered bukkit unusable?

    Thanks
     
  2. We have the same problem with R4.0 - R1.0,R2.0,R3.0 and so on...

    We got a 6 Core AMD Phenom(tm) II X6 1055T with 16GB RAM with Linux Debian Squeeze.
    We also start a vanilla server => all fine ~5-7 %
    We start a craftbukkit server => All CPU Cores go up to 60 - 80% for one lonely MC Server

    Do you have a solution yet?
     
  3. Offline

    Babadegl

  4. Sometimes I ask myself how it is possible for s/o to ignore whats written and write anything else which doesnt belong to the topic in any way.
    Is someone out there who has a solution?

    I found a old backup before Update. Now using R1.3 and working w/o any further problems.

    EDIT by Moderator: merged posts, please use the edit button instead of double posting.
     
    Last edited by a moderator: May 26, 2016
  5. Offline

    TnT

    Try running with the --nojline option.

    That should help. I am not sure why jline is causing some select few to have terrible CPU usage. I cannot reproduce on my Linux installs (default settings or otherwise). Do you have an older version of jline in your classpath?
     
  6. Offline

    wo0tta

    hi
    I also have a performance problem, I use the version 1.2.5 R4.0
    and a few days my cpu uses 100% and more lol
    I deleted all plugins, and resets bukkit but still in the rest goes to the max cpu.
    I updated to the latest java 1.6_33, the problem will not disappear.
    CPU: Core2Quad
    RAM: 4 GB (2GB for Minecraft dedicated server)

    When the server starts at the very beginning, all memory and cpu goes to the max.
    below the screen putty, the server is idle.

    [​IMG]
    and

    [​IMG]

    Sorry for my English.
     
  7. Offline

    John Lancashire

    Disabling jusched.exe from system startup works for me had constant 80% CPU usage with no players logged in now have 5% and about 30% with 7 players logged in.

    Am running tekkit server with 39 mods

    Dual core 2.7ghz 3 gb ram

    Yay no more lag or server can't keep up. ( apart from when a reactor blows up).
     
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