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    Subject2.6.10: kswapd spins like crazy

    I recently upgraded my desktop from 2.4.28 to
    2.6.10. Even under moderate memory pressure kswapd
    regularly eats almost all available cpu time
    whenever there is a little more IO throughput,
    like copying large files. The system is extremely
    sluggish during this. The system load goes up to
    7.5 or more.

    This is a Pentium3-866 with 768MB RAM, 2x1GB
    swap partitions, vanilla 2.6.10. The strange
    behaviour starts at about 200 MB of swap in use.
    2.4.28 masters the same workload without any
    problems.

    vmstat:
    procs -----------memory----------
    r b swpd free buff cache
    6 1 428012 4868 33236 347184
    ---swap-- -----io---- --system-- ----cpu----
    si so bi bo in cs us sy id wa
    10 7 147 120 108 111 19 10 68 3

    Is there anything I can do to track this down?

    Regards,
    Terje
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