lkml.org 
[lkml]   [2005]   [May]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Playing with SATA NCQ
    On Sun, May 29 2005, Mark Lord wrote:
    > My basic hdparm timing test shouldn't show much of a difference
    > with NCQ tests, becase hdparm just does a single request at a time,
    > and waits for the results before issuing another. Now, kernel read-ahead
    > may result in some command overlap and a slight throughput increase, but..
    >
    > Something like dbench and/or bonnie++ are more appropriate here.

    I don't like bonnie++ very much and dbench is very write intensive. I
    would suggest trying tiotest, find it on sf.net. It gets easily readable
    results and they are usually fairly consistent across runs if you limit
    the RAM to something sensible (eg 256MB and using a data set size of
    768MB).

    --
    Jens Axboe

    -
    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: 2005-05-29 21:10    [W:0.020 / U:1.036 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site