Re: sched domains kernbench improvements

From: Con Kolivas (kernel_at_kolivas.org)
Date: 02/28/04

  • Next message: Maurice van der Stee: "2.6.4-rc1 oops on HPFS filesystem file rename" 
    To: Nick Piggin <piggin@cyberone.com.au>
Date:	Sat, 28 Feb 2004 21:59:58 +1100

    Hi Nick

    > So it is more a matter of tuning than anything fundamental

    Geez I know how you feel... :-D

    I tried it on the X440 with sched smt disabled

    better than before but still slower than vanilla on half load; however better
    than vanilla on optimal and full load now! I wonder whether the worse result
    on half load is as relevant since this is 8x HT cpus?

    Full details:

    vanilla:
    Average Half Load Run:
    Elapsed Time 120.186
    User Time 800.614
    System Time 92.604
    Percent CPU 742.4
    Context Switches 10430.6
    Sleeps 26554.6

    Average Optimum Load Run:
    Elapsed Time 81.67
    User Time 1009.54
    System Time 113.614
    Percent CPU 1374.6
    Context Switches 63728
    Sleeps 41399.4

    Average Maximum Load Run:
    Elapsed Time 83.148
    User Time 1014.54
    System Time 123.806
    Percent CPU 1368.4
    Context Switches 45229.6
    Sleeps 22077.6

    -mm no SMT (sorry didnt do max load):
    Average Half Load Run:
    Elapsed Time 133.51
    User Time 799.268
    System Time 92.784
    Percent CPU 669
    Context Switches 19340.8
    Sleeps 24427.4

    Average Optimum Load Run:
    Elapsed Time 81.486
    User Time 1006.37
    System Time 106.952
    Percent CPU 1366.8
    Context Switches 33939
    Sleeps 32453.4

    -mm less idle:
    Average Half Load Run:
    Elapsed Time 128.23
    User Time 819.256
    System Time 93.09
    Percent CPU 713
    Context Switches 18566.2
    Sleeps 24663.8

    Average Optimum Load Run:
    Elapsed Time 79.844
    User Time 1004.26
    System Time 106.74
    Percent CPU 1391.8
    Context Switches 33718
    Sleeps 33007.8

    Average Maximum Load Run:
    Elapsed Time 81.47
    User Time 1008.32
    System Time 119.652
    Percent CPU 1384.4
    Context Switches 31296.6
    Sleeps 22667.6

    Con
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

  • Next message: Maurice van der Stee: "2.6.4-rc1 oops on HPFS filesystem file rename"

    Relevant Pages