lkml.org 
[lkml]   [1999]   [Mar]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: 2.2.3, VIA, IDE, performace -> use bonnie
    On Sat, 20 Mar 1999, Meelis Roos wrote:

    > jpcd> Various tests describe this thing as fast (~6.5 MB/sec), and it is the only
    > jpcd> IDE device I have in my machine, but hdparm only tells me 2.5MB/sec (my
    > jpcd> DCAS-34330W does 5.8MB/sec according to hdparm, and ~4MB/sec according to
    > jpcd> magazines).
    >
    > Only a little realted (but still): Intel Celeron 366 with some Intel
    > chipset. Originally had 4G IBM DTTA disk. hdparm showed 11.85 MB/s.
    > Then the disk was upgraded to a 8G IBM DTTA. Now hdparm reports 5.9..6.2
    > M/s on the first run. Slower than it showed for the 4G disk.
    >
    > Now the interesting part: running hdparm -t /dev/hda again (and again
    > and again) shows constantly 84.21 MB/s. This is the part I can't
    > understand - even if the disk is capable of caching the data, EIDE would
    > not let more than 33 MB/s through.

    RAM lets through more than 33MB/s...

    Why don't you use bonnie for your benchmarks? (writes&reads to a file of
    up to 2GB with different strategies (per char (large cpu overhead), per
    block (small cpu overhead)), and it does seeks as a benchmark.

    Though probably even bonnie can be improved, it's much better than hdparm
    for quick tests.

    Cya,
    Jelle.



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

    \
     
     \ /
      Last update: 2005-03-22 13:50    [W:0.098 / U:68.268 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site