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    SubjectRe: [RFC][PATCH 1/2] perf: Add 'perf kmem' tool
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    On Fri, Nov 20, 2009 at 10:14 AM, Ingo Molnar <mingo@elte.hu> wrote:
    > Pekka, Eduard and the other slab hackers might have ideas about what
    > other stats they generally like to see to judge the health of a workload
    > (or system).

    kmalloc()/kfree() CPU ping-pong call-sites (i.e. alloc and free
    happening on different CPUs) is one interesting metric we haven't
    implemented yet. Valgrind massif tool type of output graph would be
    helpful as well:

    http://valgrind.org/docs/manual/ms-manual.html

    On Fri, Nov 20, 2009 at 10:14 AM, Ingo Molnar <mingo@elte.hu> wrote:
    > If this iteration looks good to the slab folks then i can apply it as-is
    > and we can do the other changes relative to that. It looks good to me as
    > a first step, and it's functional already.

    Yeah, looks OK to me as the first step. Patch 2 looks premature,
    though, looking at the output of "perf kmem" from patch 1.

    Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>

    Pekka


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