Uploaded image for project: 'JDK'
  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

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P4 P4
    • hs11
    • 6
    • hotspot
    • None
    • b53
    • 6
    • b06
    • x86
    • solaris, windows_xp, windows_vista

        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.

              jrose John Rose
              osolberg Ole Solberg (Inactive)
              Votes:
              0 Vote for this issue
              Watchers:
              10 Start watching this issue

                Created:
                Updated:
                Resolved:
                Imported:
                Indexed: