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    SubjectRe: 2.4.29: strange behaviour system clock

    I have also seen such offsets on some boxes running at EADS (a Compaq
    Proliant [<-- this one has a very small offset] and a no name machine
    [<-- this one is terrible in 10 minutes 2-3 minutes too fast]). I have
    no numbers at the moment.
    If you need some more information please contact me.

    I tried to fix this issue also, but haven't found any solution. Both
    servers are running SuSE Linux I think on 8.x (2.4 kernel). I don't know
    at the moment if we tried already an update to 2.6 kernel.

    For the moment our fix is a 10 minute cronjob which execute
    hwclock --hctosys
    because hardware clock is running correct.

    A fix or a hint whats wrong would be very nice :-).

    Michael Obster

    Mario Vanoni wrote:
    > the same with
    > 2.4.29-rc[123]
    > 2.4.28-lck1
    > 2.4.23-aa3
    > every time repeatable
    > UP P4-3400HT, 2GB mem, no swap
    > IDE NEC DVD-RW ND-3500AG (dev/sr0)
    > DVD with 48 files (*.tar.bz2), 4.4GB
    > ntpdate -b offset 0.0...
    > time dircmp /mnt/cdrom /source
    > thinks it used 20 minutes, no errors
    > ntpdate -b ...: offset 1134 sec !!!
    > SMP dual P3-550, 1GB mem, no swap
    > SCSI PIONER DVD-ROM DVD-304 (slot-in, /dev/sr0)
    > same DVD, identical source (copied)
    > ntpdate -b ...: offset 0.0...
    > time dircmp /mnt/cdrom /source
    > thinks it used 12 minutes, no errors
    > ntpdate -b ...: 0.020522 sec
    > SMP dual Xeon-2800HT, 2GB mem, no swap
    > IDE NEC DVD-RW ND-2501A (/dev/sr0)
    > same deviation, offset tons of seconds
    > this is the production, time must remain correct
    > Burning CD/DVD with IDE burners,
    > there not exist SCSI burners,
    > similar retards of the system clock.
    > CD using cdrecord, DVD growisofs.
    > Doing hwclock --show, time is always correct.
    > Not in LKML, cc if you need, and ... thanks
    > Mario
    > PS We burn DVD only since 2 weeks,
    > before only CD and only on the SCSI machine,
    > and ... NO PROBLEM.

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