[lkml]   [2004]   [Oct]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: 2.6.9-rc3-mm3: vm-thrashing-control-tuning
    Hideo AOKI <> wrote:
    > Since I made the patch for 2.6.9-rc3, the patch caused trouble
    > to sysctl code in -mm tree.
    > Attached patch fixes this issue.


    Have you been doing any performance measurements on the thrash-control

    I went back to my original notes from when the patch was first being tested and
    I had:

    mem=256m, without, ./qsbench -p 4 -m 96

    ./qsbench -p 4 -m 96 27.50s user 3.92s system 9% cpu 5:34.26 total
    ./qsbench -p 4 -m 96 27.77s user 4.19s system 9% cpu 5:41.38 total
    ./qsbench -p 4 -m 96 27.22s user 4.17s system 9% cpu 5:16.75 total


    ./qsbench -p 4 -m 96 27.40s user 2.08s system 35% cpu 1:23.67 total
    ./qsbench -p 4 -m 96 27.70s user 2.14s system 30% cpu 1:38.92 total
    ./qsbench -p 4 -m 96 27.03s user 1.79s system 39% cpu 1:13.16 total

    But now I am unable to get anything remotely near the 1-2 minute runtimes
    with this workload on current kernels. Which means that either we broke it
    again or I originally mismeasured it somehow.

    I'm wondering if you've been able to notice any performance improvements
    from the thrashing control and if so, how much and on what workload?
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 14:06    [W:0.021 / U:9.008 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site