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    SubjectRe: Disk-I/O and % system (2.4.18-pre9)
    Heinz Diehl wrote:
    > Downgrade to 2.4.18-pre8 and use Michael Cohen's patch from
    > "",

    That doesn't help. I tried 2.4.16 with Debian modifications, said
    kernel patched to 2.4.18-pre9, stock 2.4.17, stock 2.4.18-pre9 and
    2.4.18-pre8-mjc with preempt and lockbreak, and all behave alike.

    On a plain ext2-filesystem on a primary partition I get (with -mjc):

    During the sync the system is extremly sluggish, and once during my
    tests it froze completely (it did still return pings with a normal
    speed) so that I had to press reset.

    The same operations on a slower computer running 2.2.20 are consideraby

    $ time tar -xzf linux-2.4.17.tar.gz; time sync

    real 0m7.716s
    user 0m5.430s
    sys 0m2.110s

    real 0m6.332s
    user 0m0.000s
    sys 0m0.120s

    > Latency in stock 2.4.17/18-pre kernels is well known :\

    this looks like more than a latency issue :-(.

    Yours, Florian Hars.
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