lkml.org 
[lkml]   [2003]   [Jul]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] O6int for interactivity
    At 04:34 PM 7/18/2003 +1000, Nick Piggin wrote:

    >Mike Galbraith wrote:
    >
    >>no_load:
    >>Kernel [runs] Time CPU% Loads LCPU% Ratio
    >>2.5.69 1 153 94.8 0.0 0.0 1.00
    >>2.5.70 1 153 94.1 0.0 0.0 1.00
    >>2.6.0-test1 1 153 94.1 0.0 0.0 1.00
    >>2.6.0-test1-mm1 1 152 94.7 0.0 0.0 1.00
    >>cacherun:
    >>Kernel [runs] Time CPU% Loads LCPU% Ratio
    >>2.5.69 1 146 98.6 0.0 0.0 0.95
    >>2.5.70 1 146 98.6 0.0 0.0 0.95
    >>2.6.0-test1 1 146 98.6 0.0 0.0 0.95
    >>2.6.0-test1-mm1 1 146 98.6 0.0 0.0 0.96
    >>process_load:
    >>Kernel [runs] Time CPU% Loads LCPU% Ratio
    >>2.5.69 1 331 43.8 90.0 55.3 2.16
    >>2.5.70 1 199 72.4 27.0 25.5 1.30
    >>2.6.0-test1 1 264 54.5 61.0 44.3 1.73
    >>2.6.0-test1-mm1 1 323 44.9 88.0 54.2 2.12
    >>ctar_load:
    >>Kernel [runs] Time CPU% Loads LCPU% Ratio
    >>2.5.69 1 190 77.9 0.0 0.0 1.24
    >>2.5.70 1 186 80.1 0.0 0.0 1.22
    >>2.6.0-test1 1 213 70.4 0.0 0.0 1.39
    >>2.6.0-test1-mm1 1 207 72.5 0.0 0.0 1.36
    >>xtar_load:
    >>Kernel [runs] Time CPU% Loads LCPU% Ratio
    >>2.5.69 1 196 75.0 0.0 3.1 1.28
    >>2.5.70 1 195 75.9 0.0 3.1 1.27
    >>2.6.0-test1 1 193 76.7 1.0 4.1 1.26
    >>2.6.0-test1-mm1 1 195 75.9 1.0 4.1 1.28
    >>io_load:
    >>Kernel [runs] Time CPU% Loads LCPU% Ratio
    >>2.5.69 1 437 34.6 69.1 15.1 2.86
    >>2.5.70 1 401 37.7 72.3 17.4 2.62
    >>2.6.0-test1 1 243 61.3 48.1 17.3 1.59
    >>2.6.0-test1-mm1 1 336 44.9 64.5 17.3 2.21
    >
    >Looks like gcc is getting less priority after a read completes.
    >Keep an eye on this please.

    That _might_ (add salt) be priorities of kernel threads dropping too low.

    I'm also seeing occasional total stalls under heavy I/O in the order of
    10-12 seconds (even the disk stops). I have no idea if that's something in
    mm or the scheduler changes though, as I've yet to do any isolation and/or
    tinkering. All I know at this point is that I haven't seen it in stock yet.

    -Mike

    -
    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/

    \
     
     \ /
      Last update: 2005-03-22 13:46    [W:0.022 / U:5.264 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site