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    SubjectRe: perf record: can I specify multiple events and use different sample-after value
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    On Mon, Feb 27, 2012 at 8:56 AM, Yuanfang Chen <cyfmxc@gmail.com> wrote:
    >
    > On Feb 26, 2012 10:23 PM, "David Ahern" <dsahern@gmail.com> wrote:
    >>
    >> On 2/24/12 3:41 PM, Yuanfang Chen wrote:
    >>>
    >>> I think I'll settle with perf record for now. Still, unlike trace
    >>> event, sample count is not meaningful for PMU event. Output of "perf
    >>> script" does not include period value. One line of code will do the
    >>> work.
    >>>
    >>> lude 17342 750118.202915: raw 0x3c: 86754      ffffffff8115f6b9
    >>> __mem_cgroup_commit_char
    >>> lude 17342 750118.203025: raw 0x3c: 1027634   ffffffff811344b9
    >>> __mem_cgroup_commit_char
    >>>
    >>> 86754, 1027634 is the period value. But I'm not sure which is the PMU
    >>> value, is it just period value, or period x sample after. If so, what
    >>> is the sample after value?
    >>
    >>
    >> You lost me. You modified perf-script to print the period?
    >>
    >> Are you asking for the PMU counter value for 0x3c?

    yes

    >>
    >> What perf commands are you running?

    perf script
    (with no options)

    >
    >>
    >> David
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