''Can't keep up'' Console spam, please help.

Discussion in 'Bukkit Help' started by TheDaddyPeanut, Feb 25, 2011.

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  1. Offline

    TheDaddyPeanut

    Hello,

    I will give you first some information from my system.

    OS: Windows 7 64-bit

    Craftbukkit-version: #440 (The recomended build at this moment)

    Plugins: Minecart mania core 0.97 and all the other addons from Minecart Mania released at the same moment as the 0.97 version - yesterday evening.

    The problem: My console spams with: [WARNING] Can't keep up! Did the system time change, or is the server overloaded?

    What you see here, isn't everything, this is just repeating between every 3 or 6 seconds or something.

    Can anyone help me? Its verry annoying and it causes laggs.
     
  2. Offline

    kenneth123

    i've got it too sometimes, but it don't bothers me. i do not have lag of it or something. what kind of computer do you use it can be due to a to less ram issue. with kind of pc i mean: RAM , HDD space etc
     
  3. Offline

    SeeD419

    It's probably just because it's Windows.
     
    j_is_me57 likes this.
  4. Offline

    AK1TTEN

    I get the saaaaame thing... Not a big deal. Not that I can see at least. Nothing happens, no lag, no shut down, nothing. I would just ignore it until you start noticing something in the slightest.
     
  5. Offline

    zergilng

    2011-02-25 12:33:38 [WARNING] **** NOT ENOUGH RAM!

    i think you need more ram
     
  6. Offline

    Peacem4k3r

    Well, I'm running a server on debian, and i get spammed with this messages, too.
    But nevermind, they don't cause any lag, just ignore it
     
  7. Offline

    TnT

    How are you launching your server? As zergilng said, you probably have allocated too much RAM.
    Those messages is the server saying "Hey, just letting you know, I'm lagging out here." The messages themselves don't cause lag, they are symptoms of lag happening on the server.
     
  8. Offline

    Peacem4k3r

    Mhm, when i get this messages ( ~ 2 times a day for ~10 minutes) , theres no lag at all. My server has got over 8 Gbs of ram, a strong quadcore cpu and enough harddisk space. Its not lagging, and this messages are spamming me even if noone is connected.
     
  9. Offline

    TnT

    Well, I'm not trying to argue, but I'm not bullshitting you. If you only see those messages a couple times a day, its probably such a brief lag spike that you don't notice it when you play. You can probably narrow down what is happening both those times to cause those messages (backups, mapping, etc).

    I only get those on occasion, mainly when my c10t mapping kicks off. However, when it happens, and anyone is online (runs at 3 AM, so rarely anyone is online), they do experience lag.

    Most of the time, these messages can be safely ignored, but if you are experiencing lag, I'd look to remove those messages first. The other causes of lag tend to be lack of bandwidth, which you won't see as a message on the console.
     
  10. Offline

    johnka

    I get this warning like every 10 seconds:

    Server hardware is fine ( Core i7 950, 16GB RAM, raid 10) so I dont think that could be the reason.
    minecraft server itself got 4gb of ram assigned.

    Show Spoiler

    2011-02-26 16:01:00 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:01:10 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:01:20 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:01:30 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:01:40 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:01:55 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:02:05 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:02:15 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:02:25 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:02:35 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:02:45 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:02:47 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:03:00 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:03:10 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:03:20 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:03:30 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
    2011-02-26 16:03:40 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?


    I learned to live with it as it doesnt seem to affect the server performance.
    However it raises the size of my log-file to 10-15 megabytes per day.

    Annoying, if you have to look for something in the logs.
     
  11. Offline

    Mohammad

    Code:
    2011-02-25 12:33:38 [INFO] Starting minecraft server version Beta 1.3
    2011-02-25 12:33:38 [WARNING] **** NOT ENOUGH RAM!
    2011-02-25 12:33:38 [WARNING] To start the server with more ram, launch it as "j
    ava -Xmx1024M -Xms1024M -jar minecraft_server.jar"
    So its not a bukkit server?
    try making a .bat file with
    "
    Code:
    "java -Xmx1024M -Xms1024M -jar minecraft_server.jar"
    " and run it that might help
     
  12. Offline

    TheDaddyPeanut

    If i make a BAT file with that, its not a craftbukkit server anymore, just a default i geuss.

    And im using a pretty new Alienware gaming laptop with i7 Processor and good GPU.
    So I dont think its my computer.

    So im searching for a way to keep it on Craftbukkit, but with more RAM.

    anyone knows?
     
  13. Offline

    Mohammad

    sorry start it as this code in a bat file for craftbukkit my bad.
    Code:
    @echo off
    IF /I "%PROCESSOR_ARCHITECTURE:~-2%"=="64" "%ProgramFiles(x86)%\Java\jre6\bin\java.exe" -Xincgc -Xmx1024M -jar "%~dp0craftbukkit.jar"
    IF /I "%PROCESSOR_ARCHITECTURE:~-2%"=="86" java -Xincgc -Xmx1024M -jar "%~dp0craftbukkit.jar"
    PAUSE
     
  14. Offline

    TheDaddyPeanut

    It fixes the RAM problem, but i still have the spam.

    Isnt there a filter plugin or something to filter the WARNINGS out of the console?
     
  15. Offline

    Nekpek

    Wierd i run Windows 7 too.. and i dont have this issue.
    does sound like a little Mac lover there...

    then your specs or too low what specs do you have
    (if you dont know then here a little help)
    1. press the windows logo at the taskbar
    2. right click Computer
    3. click Properties
    there should stand.
     
  16. Offline

    TheDaddyPeanut

    After a time it stops now but then it has MASSIVE LAGGS lol
     
  17. Offline

    Novemberman

    im getting this error after about 20 -30 minutes server online reboot then its ok ..... very annoying do have to reboot every half hr

    pc specs: windows 7
    intel core 13cpu 540 @ 3.07ghz
    8gig ram

    i also have an avg of 15 players at a time around the world.....

    any and all help very welcomed
     
  18. Offline

    Plague

    What command do you use to run the server?
     
  19. Offline

    Novemberman

    @ECHO OFF
    IF /I "%PROCESSOR_ARCHITECTURE:~-2%"=="64" "%ProgramFiles(x86)%\Java\jre6\bin\java.exe" -Xmx1024M -Xms1024M -jar "%~dp0craftbukkit.jar"
    IF /I "%PROCESSOR_ARCHITECTURE:~-2%"=="86" java -Xmx1024M -Xms1024M -jar "%~dp0craftbukkit.jar"

    PAUSE
     
  20. Offline

    TnT

    Try this:
    Code:
    @echo off
    java -Xincgc -Xmx1G -jar craftbukki.jar nogui
    pause
     
  21. Offline

    tension69

    I've read documentation elsewhere re minecarts causing a lot of lag on peoples' servers(bad physics modelling/collision detection). Make sure your world isn't littered with unused ones bumping into each other at end of lines etc. I banned them=no lag-no spam.
    Not saying it's your problem, but it may help.
     
  22. Offline

    Novemberman


    that doesn't even start the server.... and i get this with a fresh world....
     
  23. Offline

    SweetCraft Girl

    Banned minecarts??

    LOL!
     
  24. Offline

    mindless728

    nope, i run a server off of lower specs (Athlon II X2 4GB ram) and i don't get thee messages unless someone is fly hacking
     
  25. Offline

    Novemberman

    started a new map and still having this problem
     
  26. Offline

    TnT

    Open up IE x64, browse to java.com and download the latest x64 Java (using IE x64 is an easy way of doing it - if you use Firefox/Chrome/IE x86 you'll get x86 Java).
    Install it and that command should work.
     
  27. Offline

    Xgkkp

  28. Offline

    Novemberman

    did this and i still get the message.

    i notice i get it a lot when people warp around log in and out real quick bc the map loading it so terrible ( thank you notch)
     
  29. Offline

    TnT

    What error do you get?
     
  30. Offline

    Novemberman

    [WARNING] Can't keep up! Did the system time change, or is the server overloaded?

    it starts slowly like once every 5 minutes then after a few people start login in and out because of the mini block lag, the message starts spamming more tot he point where that is all i see every 3 second
     
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