[lkml]   [2001]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: I/O problem with sustained writes
    Collectively Unconscious wrote:
    > We are having a problem with writes.
    > They start at 14 M/s for the first hour and then drop to 2.5 M/s and stay
    > that way. Reads do not seem effected and we've noticed this on the 2.2.16,
    > 2.2.17, 2.2.18 and now the 2.2.19pre11 kernels.
    > These are SMP P-IIIs from 450 to 800 MHz. Redhat 6.2

    I've seen something similar on Seagate ST313021A IDE drives.
    After a few minutes their read throughput falls from 20
    megs/sec to about 5. Issuing *any* drive-setting command
    brings the throughput back. Even a command which the disk
    doesn't support.

    So I have a cron job which runs `hdparm -A1' once per minute.

    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 13:29    [W:0.028 / U:4.564 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site