Redstone lag

Discussion in 'Bukkit Help' started by jac0b_, Aug 7, 2011.

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  1. Offline

    jac0b_

    lately (past 2 days or so), my server i run has been getting very bad redstone lag, everything else is fine, no block lag or chat lag. when i use /debug clock (commandbook), i get a very detailed list of server information about the lag, the TPS is very low and i know this has to do with the redstone problem.
    here's one from just now

    Code:
    [INFO] Clock test result: CLOCK BEHIND
    
    [INFO] WARNING: You have potential block respawn issues.
    [INFO] Expected time elapsed: 5000.0ms
    [INFO] Time elapsed: 9492ms
    [INFO] Error: -47.32406236831015%
    [INFO] Actual clock rate: 10.535187526337968 ticks/sec
    [INFO] Expected clock rate: 20 ticks/sec
    
    as you can the, the TPS is very low yet while in game the only problem is redstone, what could be causing his?
    Server specs:
    OS: Ubuntu 10.04 64-Bit
    CPU: AMD Quad Core @ 3ghz
    RAM: 4GB
    HDD: 500GB x 2

    startup command we use is
    Code:
    java -Xmx4096M -XX:ParallelGCThreads=8 -server -Xincgc -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:+AggressiveOpts -XX:+CMSParallelRemarkEnabled -XX:+DisableExplicitGC -XX:MaxGCPauseMillis=500 -XX:SurvivorRatio=16 -XX:TargetSurvivorRatio=90 -XX:+UseAdaptiveGCBoundary -XX:-UseGCOverheadLimit -Xnoclassgc -XX:UseSSE=3 -XX:PermSize=128m -XX:LargePageSizeInBytes=4m -jar craftbukkit-0.0.1-SNAPSHOT.jar nogui
    and the plugins we use are..
    Code:
    iConomy, WorldEdit, obuShutTheHellUp, MyHome, MyWarp, SignColours, MCDocs, CommandHelper, PermissionsEx, LivingForest, mcMMO, MobBounty, TelePlusPlus, CommandBook, KiwiAdmin, WorldGuard, HeroChat, xAuth, iConomyChestShop, ServerSave, HeroicDeath, BananaChunk, Permissions, LWC, NoCheat
    would any of these plugins cause redstone lag or is there another reason? i know redstone clocks can cause lag, would be hard to find all of them though.
    i've tried restarting our minecraft server and rebooting the whole server itself, no luck. removed a large redstone clock, still no luck. anything else i can try? perhaps adding something to the startup command?
     
  2. Offline

    silverches

    Jacob our os is ubuntu 10.04
     
  3. Offline

    emericask8ur

    And you have the lasted build version? Doouble check everything to make sure you didnt mess up the start data too
     
  4. Offline

    jac0b_

    yeah we have the latest build, everything is how it should be yet we're still having this problem, we're going to update to Java 7 in a bit so we'll see how that goes.
     
  5. Offline

    Waterflames

    Try running your server without plugins and see if the problem persists. If not, add a plugin and see if it lags, if it still doesn't lag keep adding plugins untill it does.

    BTW: backup your world!
     
  6. Offline

    Austin

    We have the same problem, but we get results as bad at -89%
     
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