Messages in this thread | | | Date | Mon, 6 Feb 2012 15:17:21 -0200 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [BUG] perf: perf sched warning possibly due to clock granularity on AMD |
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Em Mon, Feb 06, 2012 at 03:31:00PM +0100, Stephane Eranian escreveu: > On Mon, Feb 6, 2012 at 3:26 PM, Peter Zijlstra <peterz@infradead.org> wrote: > > On Mon, 2012-02-06 at 14:25 +0100, Stephane Eranian wrote: > >> In summary, two issues: > >> - Why is sched_clock_stable not set or even tested on recent AMD systems? > > > > I'll leave that for Robert to answer, also added Boris to the CC, him > > know AMD bits too. > > > Ok, good. > > >> - perf should not rely on fine granularity timestamps in the re-ordering code > > > > Uhm, what else is there?
> I understand your point. I don't quite understand what the code is > supposed to do for odered > samples. I'd like Arnaldo to explain this warning first.
That code was written by Frédéric and IIRC also Thomas, its something I plan to rework somehow in the future, but for now I'll let them chime in... Frédéric?
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