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    SubjectMore latency regressions with 2.6.11-rc4-RT-V0.7.39-02
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    Ingo,

    Did something change recently in the VM that made copy_pte_range and
    clear_page_range a lot more expensive? I noticed a reference in the
    "Page Table Iterators" thread to excessive overhead introduced by
    aggressive page freeing. That sure looks like what is going on in
    trace2. trace1 and trace3 look like big fork latencies associated with
    copy_pte_range.

    This is all with PREEMPT_DESKTOP.

    Lee
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