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    SubjectRe: [RFC PATCHv3] perf tools: add event grouping capability to "perf stat"
    On Thu, Nov 25, 2010 at 09:00:09AM +0100, Peter Zijlstra wrote:
    > On Thu, 2010-11-25 at 08:46 +0100, Frederic Weisbecker wrote:
    > > > perf record -e task-clock:freq=1000,cycles:period=0
    > >
    > > Wouldn't this syntax clash with the flags we have on events already?
    > >
    > > the u,k,p flags?
    >
    > From stephane's email (to which you were CC'ed) http://lkml.org/lkml/2010/11/23/303

    Right, I'm going look at this.


    > > $ perf record -e cycles:u:period=100000,instructions:k:freq=1500 -a -- sleep 5
    >
    > The parser isn't particularly pretty, maybe its time to think about a parser generator?

    May be yeah.


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