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  1. JDK
  2. JDK-6471009

Significantly higher CPU usage in jvm1.6 build 97/98 vs jvm1.5.0_06-b05 on DOTS ATCJ2 test

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 6
    • Fix Version/s: hs11
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Introduced In Build:
      b53
    • Introduced In Version:
      6
    • Resolved In Build:
      b06
    • CPU:
      x86
    • OS:
      solaris, windows_xp, windows_vista

      Backports

        Description

        We are seeing much higher CPU usage on JVM 1.6 than on JVM 1.5 when
        running the "DOTS ATCJ2" test on a large Derby / Java DB database.

        The test has previously been run with jvm1.5.0_06-b05 on Solaris 10 1/06
        s10x_u1wos_19a X86 - SunOS 5.10 Generic_118844-26.
        Increased CPU usage is seen with jvm1.6.0-rc-b97 and b98.


        The size of the database is ~342GB (du -h: 342G TESTDB/seg0).
        (# tuples in ATCJ2 tables: BID: 3.4 mill., ITEM: 600 mill., REGISTRY:
        417 mill.)


        --------
        * DOTS: see http://ltp.sourceforge.net/dotshowto.php ,
        http://db.apache.org/derby/integrate/DOTS_Derby.htm ,
        http://db.apache.org/derby/binaries/UsingDotsDerbySystemTest.pdf .
        We have adapted DOTS to also run on other OS's than Linux.

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                • Assignee:
                  jrose John Rose
                  Reporter:
                  osolberg Ole Solberg (Inactive)
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                  • Created:
                    Updated:
                    Resolved:
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