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    SubjectRe: 7.52 second kernel compile
    On Tue, Mar 19, 2002 at 10:52:40AM +1100, Paul Mackerras wrote:
    > The G4 has 4 performance monitor counters that you can set up to
    > measure things like ITLB misses, DTLB misses, cycles spent doing
    > tablewalks for ITLB misses and DTLB misses, etc.
    > What I need to do now is
    > to put some better infrastructure for using those counters in place
    > and try your program using those counters instead of the timebase.

    Sounds like a good candidate for the first non-x86 port of oprofile[1].
    Write the kernel part, and all the nice userspace tools come for free.
    There are also a few other perfctr abstraction projects, which are
    linked off the oprofile pages somewhere iirc.


    | Dave Jones.
    | SuSE Labs
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