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    SubjectRe: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt
    Nick Piggin wrote:
    >
    >
    > Prakash K. Cheemplavam wrote:
    >
    >> Nick Piggin wrote:
    >>
    >>>
    >>>
    >>> Prakash K. Cheemplavam wrote:
    >>>
    >>>> Nick Piggin wrote:
    >>>>
    >>>>>
    >>>>>
    >>>>> Prakash K. Cheemplavam wrote:
    >>>>>
    >>>>>> Ok, I found the bugger: It *IS* the sheduler. I tried
    >>>>>> elevator=deadline and all stuttering went away. Before I was using
    >>>>>> as. mm1 used default sheduler (as I think) and ther eno probs. So
    >>>>>> the (updated?) as sheduler in mm2 has a problem...
    >>>>>
    >>>>>
    >>>>>
    >>>>>
    >>>>>
    >>>>>
    >>>>>
    >>>>> Weird. I have a few new AS patches in mm2 so its probably them. I
    >>>>> can't
    >>>>> see why they'd be causing you to lose interrupts though. Could you try
    >>>>> this patch please.
    >>>>
    >>>>
    >>>>
    >>>>
    >>>>
    >>>> So i tried the patch, but it didn't help. I cannot feel any
    >>>> difference. Here are the vstats. First for dealine and second fro
    >>>> patched as. Please keep in mind that (at the end of the stat) I
    >>>> fiddled a bit around with the kernel sources while doing the burn.
    >>>> Intersting would be the start of the erasing and start of burning.
    >>>> There as gives serious stuttering.
    >>>
    >>>
    >>>
    >>>
    >>>
    >>>
    >>> OK thanks. Please try this patch then. Thank you.
    >>>
    >>
    >> Should I first revert the other patch or just use this over the
    >> patched file?
    >
    >
    >
    > Yeah revert the other I sent you.

    Yes, with this patch, it seems to be like in mm1 again, no more
    stuttering (or at least I can't notice it anymore, as since 2 daysI have
    an LCD), but also the bad stuttering at erase and burn start are gone
    again. So do you have an idea what causes the problem?

    vmstat:
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    Prakash

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