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    SubjectRe: [BENCHMARK] I/O regression after 2.6.0-test5
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    > Randy can reproduce regressions, so I'll work on his first.

    Below is test8 and test8 with the test5 as-iosched.c (2.6.0-test8-as).
    Jobs/minute is way up, and total runtime is way down with the test5
    as-iosched.c.

    The machine (quad P3 xeon) locked up during a bonnie++ run. I can't
    compare that to vanilla test8 because I stopped the test8 to run the
    test5 as-iosched. Both of these were compiled with gcc-3.3.1 because
    of the RedHat gcc-2.96 bug in test8. (In case the compiler was part
    of the instability).

    Earlier I ran 2.6.0-test3-mm2 compiled with gcc-3.3.1, and it
    was stable on this box.

    AIM7 dbase workload
    kernel Tasks Jobs/Min Real CPU
    2.6.0-test8-as 32 601.0 316.3 134.0
    2.6.0-test8 32 299.8 634.0 128.6

    2.6.0-test8-as 64 782.6 485.8 259.2
    2.6.0-test8 64 450.5 843.9 246.5

    2.6.0-test8-as 96 869.1 656.1 387.6
    2.6.0-test8 96 549.7 1037.4 366.0

    2.6.0-test8-as 128 919.3 827.0 522.8
    2.6.0-test8 128 558.7 1360.8 497.6

    2.6.0-test8-as 160 955.0 995.2 650.3
    2.6.0-test8 160 522.1 1820.2 612.2

    2.6.0-test8-as 192 981.9 1161.5 790.9
    2.6.0-test8 192 515.5 2212.4 742.7

    2.6.0-test8-as 224 1002.3 1327.5 910.2
    2.6.0-test8 224 529.9 2510.8 859.5

    2.6.0-test8-as 256 1009.9 1505.7 1027.7
    2.6.0-test8 256 552.4 2753.0 980.4


    AIM7 fserver workload
    kernel Tasks Jobs/Min Real CPU
    2.6.0-test8-as 4 80.5 301.0 37.0
    2.6.0-test8 4 42.3 573.6 40.9

    2.6.0-test8-as 8 133.0 364.6 64.0
    2.6.0-test8 8 63.3 765.7 71.6

    2.6.0-test8-as 12 166.7 436.3 93.4
    2.6.0-test8 12 83.2 874.2 95.0

    2.6.0-test8-as 16 175.9 551.2 111.5
    2.6.0-test8 16 87.5 1108.4 102.5

    2.6.0-test8-as 20 186.3 650.7 133.8
    2.6.0-test8 20 105.0 1154.6 136.7

    2.6.0-test8-as 24 202.8 717.3 161.2
    2.6.0-test8 24 111.2 1308.1 162.2

    2.6.0-test8-as 28 207.1 819.3 200.0
    2.6.0-test8 28 130.7 1297.9 185.8

    2.6.0-test8-as 32 210.6 920.7 226.5
    2.6.0-test8 32 134.2 1444.5 212.9


    AIM7 shared workload
    kernel Tasks Jobs/Min Real CPU
    2.6.0-test8-as 64 1949.6 191.1 170.8
    2.6.0-test8 64 829.1 449.3 167.8

    2.6.0-test8-as 128 2148.3 346.8 339.2
    2.6.0-test8 128 1105.2 674.1 330.5

    2.6.0-test8-as 192 2265.7 493.2 507.1
    2.6.0-test8 192 1320.0 846.6 504.7

    2.6.0-test8-as 256 2382.9 625.3 678.0
    2.6.0-test8 256 1462.1 1019.0 672.7

    2.6.0-test8-as 320 2450.5 760.0 853.7
    2.6.0-test8 320 1573.0 1184.0 845.2

    2.6.0-test8-as 384 2517.4 887.8 1030.6
    2.6.0-test8 384 1601.1 1395.9 1028.7

    2.6.0-test8-as 448 2547.5 1023.5 1214.4
    2.6.0-test8 448 1659.7 1571.0 1205.2

    2.6.0-test8-as 512 2594.6 1148.5 1389.7
    2.6.0-test8 512 1614.4 1845.8 1381.5

    I'm running Nick's patch
    http://marc.theaimsgroup.com/?l=linux-kernel&m=106688130229337&w=2
    on test8 at the moment. I should have some comparison numbers
    within 24 hours.

    --
    Randy Hron
    http://home.earthlink.net/~rwhron/kernel/bigbox.html

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