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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-2
    Ingo Molnar wrote:
    > * Eran Mann <emann@mrv.com> wrote:
    >
    >>Right on.
    >>After hdparm -d0 I see maximum latency of 35 us after a full kernel
    >>build with a few GUI apps in the background. I´ll try to find a
    >>reasonable compromise.
    >
    > it might make sense to report this to the hw vendor as well, as these
    > latencies dont occur at _every_ IDE DMA, it might be some sort of
    > chipset (or BIOS) bug they might want to see resolved as well (if this
    > isnt a ship-and-forget vendor). 2 msec stalls are not nice to a fair
    > number of applications.
    >
    > Ingo

    It´s a rather old white-box machine with a noname VIA-based motherboard,
    So I don´t really have whom to report the problem to. On the other hand
    with udma2 I see latencies < 170 us which seems reasonable.
    Thanks for the advice.
    Eran.
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