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  1. JDK
  2. JDK-6614948

Customer is observing long VM pauses during GC

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2
    • Resolution: Not an Issue
    • Affects Version/s: 5.0u11
    • Fix Version/s: 5.0u11
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
      gc
    • CPU:
      sparc
    • OS:
      solaris_10

      Description

      Synopsis : Customer is observing long VM pauses during GC

      Description :

          At customer location they are seeing VM pause significantly (300sec) during GC.
          This is a system where they have significant burst mode activity with lots of objects being created.


      Operating System Details : SunOS gnre2sa03 5.10 Generic_118833-36 sun4u sparc SUNW,Sun-Fire-880
      JDK Version : 1.5.0_11-b03


      JVM Params Used :
      -verbose:gc -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -XX:+PrintTenuringDistribution -XX:MaxNewSize=24m -XX:NewSize=24m -XX:SurvivorRatio=128 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:MaxTenuringThreshold=0 -XX:CMSInitiatingOccupancyFraction=60 -Xms128m -Xmx512m


      Dumps available at location : /net/cores.central/cores/dir33/831526
      Contents :
      1) showrev -p output
      2) Output of dexplorer which is one of the scripts in DTrace toolkit.
      3) vmstat output : vmstat.txt (2 files from 2 servers)
      4) prstat output : prstat.txt (2 files from 2 servers)
      5) Application Server Logs : ApplicationServer-1-GC.log & ApplicationServer-2-GC.log ( GC log from the 2 servers)

      Customer needs to know how to prevent the problem or workaround to resolve the issue.

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            Assignee:
            Unassigned Unassigned
            Reporter:
            sdattatrsunw Sreenatha Dattatri (Inactive)
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