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    SubjectRe: 2.5.70-mm9

    Mingming Cao wrote:

    >On Sat, 2003-06-14 at 01:01, Andrew Morton wrote:
    >>Was elevator=deadline observed to fail in earlier kernels? If not then it
    >>may be an anticipatory scheduler bug. It certainly had all the appearances
    >>of that.
    >Yes, with elevator=deadline the many fsx tests failed on 2.5.70-mm5.
    >>So once you're really sure that elevator=deadline isn't going to fail,
    >>could you please test elevator=as?
    >Ok, the deadline test was run for 10 hours then I stopped it (for the
    >elevator=as test).
    >But the test on elevator=as (2.5.70-mm9 kernel) still failed, same
    >problem. Some fsx tests are sleeping on io_schedule().

    So by failed, you just mean stuck in io_schedule? Are you sure
    they are permanently stuck there? Is any progress being made?
    I have tried this test, and often some or most of the processes
    wait in io_schedule for a while, but do get woken.

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