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    SubjectRe: Eradic disk access during reads
    On Sat, Sep 17, 2005 at 07:26:11AM +0300, Al Boldi wrote:
    > Monitoring disk access using gkrellm, I noticed that a command like
    > cat /dev/hda > /dev/null
    > shows eradic disk reads ranging from 0 to 80MB/s on an otherwise idle system.
    > 1. Is this a hardware or software problem?

    Difficult to tell without more info. Can be a broken IDE disk or defective

    > 2. Is there a lightweight perf-mon tool (cmd-line) that would log this
    > behaviour graphically?

    You can do " readspeed </dev/hda | tr '\r' '\n' > log " with the readspeed
    tool from there :

    Then you just have to graph $6 (kB/s) versus $1 (bytes read). There may
    be other tools which do all this automatically though.


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      Last update: 2005-09-17 07:53    [W:0.019 / U:32.252 seconds]
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