Out of memory error

Discussion in 'Bukkit Help' started by Williamsson, Jul 5, 2011.

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  1. Offline

    Williamsson

    Okay, so we've suddenly got ourselves a new error. Out of memory error.

    Code:
    2011-07-04 17:03:46 [SEVERE] Exception in thread "Thread-3069"
    2011-07-04 17:03:46 [SEVERE] java.lang.OutOfMemoryError
    2011-07-04 17:03:46 [SEVERE]     at java.io.FileInputStream.readBytes(Native Method)
    2011-07-04 17:03:46 [SEVERE]     at java.io.FileInputStream.read(Unknown Source)
    2011-07-04 17:03:46 [SEVERE]     at org.dynmap.web.handlers.FileHandler.handle(FileHandler.java:111)
    2011-07-04 17:03:46 [SEVERE]     at org.dynmap.web.HttpServerConnection.run(HttpServerConnection.java:184)
    2011-07-04 17:04:15 [SEVERE] Exception in thread "Connection #1 read thread"
    2011-07-04 17:04:15 [SEVERE] java.lang.OutOfMemoryError: unable to create new native thread
    2011-07-04 17:04:15 [SEVERE]     at java.lang.Thread.start0(Native Method)
    2011-07-04 17:04:15 [SEVERE]     at java.lang.Thread.start(Unknown Source)
    2011-07-04 17:04:15 [SEVERE]     at net.minecraft.server.NetworkManager.a(NetworkManager.java:182)
    2011-07-04 17:04:15 [SEVERE]     at net.minecraft.server.NetworkManager.g(NetworkManager.java:159)
    2011-07-04 17:04:15 [SEVERE]     at net.minecraft.server.NetworkManager.c(NetworkManager.java:259)
    2011-07-04 17:04:15 [SEVERE]     at net.minecraft.server.NetworkReaderThread.run(SourceFile:84)
    This example shows that it is dynmap that causes this problem. But we've also tried removing this plugin, and the error still occurs.
    It has also complained about citizens, wich we removed, and so on.

    Latest:

    Code:
    java.lang.OutOfMemoryError: unable to create new native thread
        at java.lang.Thread.start0(Native Method)
        at java.lang.Thread.start(Unknown Source)
        at net.minecraft.server.NetworkManager.a(NetworkManager.java:182)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:817)
        at net.minecraft.server.Packet255KickDisconnect.a(SourceFile:26)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:84)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:451)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
    The server has 4GB DDR3 RAM, and has a heap of 1,5GB.

    Plugins installed from the beginning:

    AdminMode

    Backup


    BigBrother

    Citizens

    CommandBook

    Craftbook


    Dynmap

    GroupManager

    iConomy

    MCDocs

    MCTelnet


    MultiVerse

    Stargate

    WorldBorder

    WorldEdit

    WorldGuard

    Plugins installed now, with latest error:

    Citizens

    GroupManager

    iConomy

    Multiverse

    Stargate

    WorldBorder

    WorldEdit

    WorldGuard

    -------------

    The error occurs when the server's been running for about one hour. Now we've tried with a vanilla, bukkit, server and for two hours we've not seen any errors.

    Someone that could help us with this?
     
  2. Offline

    1lann

    Are you using a 64bit OS? Also what's your startup script.
     
  3. Offline

    Williamsson

    Yes, we're running 64bit.

    Code:
    IF /I "%PROCESSOR_ARCHITECTURE:~-2%"=="64" "%ProgramFiles(x86)%\Java\jre6\bin\java.exe" -Xms1536M -Xmx1536M -jar "%~dp0craftbukkit-0.0.1-SNAPSHOT.jar"
    IF /I "%PROCESSOR_ARCHITECTURE:~-2%"=="86"  java -Xms1536M -Xmx1536M -jar "%~dp0craftbukkit-0.0.1-SNAPSHOT.jar"
    
    PAUSE

    And we've got it to crash faster if we're wandering around a bit, and there's a storm running.

    bump

    Really, really, need help with this issue :3

    EDIT by Moderator: merged posts, please use the edit button instead of double posting.
     
    Last edited by a moderator: May 17, 2016
  4. Offline

    Luwiego

    I got the same problem and no one helps :(
     
  5. Offline

    1lann

    You need to install the 64 bit version of java and remove the (x86) in your startup script
     
  6. Offline

    Naur

    I got the same problem. I have Win 7 64 bit, i have installed the 64 bit java and my startup script is:
    @ECHO OFF
    SET BINDIR=%~dp0
    CD /D "%BINDIR%"
    "%ProgramFiles%\Java\jre6\bin\java.exe" -Xincgc -Xmx3G -jar craftbukkit-0.0.1-SNAPSHOT.jar
    PAUSE
     
  7. Offline

    Black_Jack

    Same, Linux ADM64
     
  8. Offline

    MalcolmLC

    Why is this not a serious problem. I lost all my members but 4 :( I guess my server was bound to fail anyways :(
     
  9. Offline

    Legionarius

    Having similar issues. Running vanilla to test a few things. My server usually supports 40+ easily. See other threads about this in the help forum. You are not alone.
     
  10. Offline

    Waffletastic

    Getting same issue. Anyone found a solution?
     
  11. Offline

    Nathan C

    If this is a homehosted server, then that is your issue.
     
  12. Offline

    pyraetos

    Everyone should make sure that his starter script, including variables such as "java" or "Program Files" lead to a 64 bit version of Java, and that you include the parameter -Xincgc
     
  13. Offline

    MonsieurApple

    Williamsson what operating system? Still getting this error?
     
  14. Offline

    Williamsson

    Well this was a old thread :D
    No, when I posted that issue we borrowed a server from the school we went to and hosted it there, but when we quit we got ourselves a completely new server with some nice goodies and got 100/10 mb/s to it, and that pretty much solved all our problems, sure we still have some issues, but that's often because of some failure in plugin/RUN.bat config :)
    Thanks anyhow ^^
     
  15. Offline

    MonsieurApple

    This error just popped up and took me a week to figure it out. Just trying to see if I could help anyone else ;)
     
  16. Offline

    TnT Retired Staff

    You can always post your solution here, just in case it helps anyone else who hits this forum. You already necro'd it - might as well make it useful.
     
  17. Offline

    MonsieurApple

    Basically if you're on Ubuntu 11.10 and have php5, theres a bug where fuser forks uncontrollably when trying to delete old session information. This takes up alot of cpu and starves your system of any resources.

    If you change /etc/cron.d/php5 from the 11.10 value:
    Code:
    09,39 *     * * *     root   [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete
    To the old 11.04 version:
    Code:
    09,39 *     * * *     root   [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 | xargs -n 200 -r -0 rm
    You will find that the "unable to create native thread" error becomes non-existant.

    Hope this helps someone down the road :)
     
  18. Offline

    Kaosvf

    Hi,
    I have the same problem, but I can't follow the solution in the message #18 because I have CentOS 6.2 64bit and the file php5 under /etc/cron.d there isn't, what can I do? (I have php 5.3 installed in the server).
    Regards.
     
  19. Offline

    MonsieurApple

    Do you get the same error on the 9 and 39'th minute?
     
  20. Offline

    Kaosvf

    Since the 2012-02-12 I don't receive nothing more! The problem is solved, I don't remember why, I think an update of some plugins.

    This happened again... (only from 12 to 17 doesn't happened nothing), however the answers is "nope", happen ramdomly :(
     
  21. Offline

    ratty

    I can create the "can't create thread" error by just running a lot of other programs and eat up all the ram on the server. Like if I render a map image of a huge world is an easy way.

    I can see it happen, but I don't understand it, I mean I can start bukkit with -Xmx8192M in the java start options, and have a debugger showing java using up 20% of the ram allocated to it, and still have problems if other processes use up memory. Or maybe its some other resource that its using up? I'd love to find a way not to worry about some other program go out of control and whack the minecraft server from being low on memory. Its not like it is actually OUT of memory, otherwise I'd see oom-killer get triggered on apache2 processes.
     
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