Re: [BENCHMARK] 2.6.3-rc2 v 2.6.3-rc3-mm1 kernbench

From: Con Kolivas (kernel_at_kolivas.org)
Date: 02/16/04

  • Next message: Eduard Bloch: "Re: JFS default behavior" 
    To: Nick Piggin <piggin@cyberone.com.au>
Date:	Tue, 17 Feb 2004 01:30:24 +1100

    On Tue, 17 Feb 2004 00:20, Nick Piggin wrote:
    > Con Kolivas wrote:
    > >-----BEGIN PGP SIGNED MESSAGE-----
    > >Hash: SHA1
    > >
    > >Here's some nice evidence of the sched domains' patch value:
    > >kernbench 0.20 running on an X440 8x1.5Ghz P4HT (2 node)
    > >
    > >Time is in seconds. Lower is better (fixed font table)
    > >
    > >Summary:
    > >Kernel: 2.6.3-rc2 2.6.3-rc3-mm1
    > >Half(-j8) 120.8 113.0
    > >Optimal(-j64) 81.6 79.3
    > >Max(-j) 82.9 80.3
    > >
    > >
    > >shorter summary:
    > >2.6.3-rc3-mm1 kicks ***
    >
    > Thanks Con,
    > Results look pretty good. The half-load context switches are
    > increased - that is probably a result of active balancing.
    > And speaking of active balancing, it is not yet working across
    > nodes with the configuration you're on.
    >
    > To get some idea of our worst case SMT performance (-j8), would
    > it be possible to do -j8 and -j64 runs with HT turned off?

    sure.

    results.2.6.3-rc3-mm1 + SMT:
    Average Half Load Run:
    Elapsed Time 113.008
    User Time 742.786
    System Time 90.65
    Percent CPU 738
    Context Switches 28062.6
    Sleeps 24571.8

    Average Optimum Load Run:
    Elapsed Time 79.278
    User Time 1007.69
    System Time 107.388
    Percent CPU 1407
    Context Switches 33355
    Sleeps 32720

    2.6.3-rc3-mm1 no SMT:
    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

    Con
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