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  1. JDK
  2. JDK-4844845

UseParallelGC problem with 1.4.2_19 when running SPECjbb2000 v1.02 on Win/IA64

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    • Subcomponent:
      gc
    • Resolved In Build:
      b24
    • CPU:
      itanium
    • OS:
      windows_2000

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        Description

        We're continuing to test Mantis Build 19 on IA64. We've run into a
        problem with Parallel GC. We're running SPECjbb2000 v1.02 (for 32
        warehouses) on a 16 way 1.2Ghz Itanium 3 (Madison) with 32Gb RAM.

        The test completes if we do not use Parallel GC. If we use the
        Parallel GC option with 8 PGC threads, the test crashes almost
        immediately. If we use 4 PGC threads, the test crashes at warehouse
        29.

        I have attached the last few lines of our log for the 29 warehouse
        crash (1.4.2_b19_crash.out). The command line used for this test was
        as follows:


        java -server -verbose:gc -Xmn2048m -Xms6144m -Xmx6144m -XX:+UseParallelGC
        -XX:ParallelGCThreads=4 -XX:+UseTLAB -XX:TLABSize=512k -cp
        .\jbb.jar;.\jbb_no_precompile.jar;.\check.jar;.\reporter.jar;.
        spec.jbb.JBBmain -propfile SPECjbb.props

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

        Update for Mantic Build 20:

        We ran our SPECjbb2000 test the other day with Mantis Build 20. We were
        using the same command line as we normally do (as per the e-mail I sent
        you about Mantis Build 19), with 8 PGC threads. The test failed at 17
        warehouses. I have attached the output from the crash: 1.4.2_20_crash.out.
        The test does complete if I use 4 PGC threads.

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                Assignee:
                pbk Peter Kessler
                Reporter:
                clucasius Carlos Lucasius (Inactive)
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