Messages in this thread | | | Date | Sat, 19 Sep 2009 10:01:14 +0200 | From | Ingo Molnar <> | Subject | Re: performance counter for linux question. |
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* sebastien cabaniols <sebastien.cabaniols@hp.com> wrote:
> Hello list, > > I am interested by monitoring instructions versus cycles with a Nehalem box > using 2.6.31 with PCL. > > Is there a way with perf report to display both counters ? > > I used > > perf record -e cycles -e instructions -a for the recording session. > > perf report -n seems to be doing what I need but for only one counter. > > Is this a limitation of perf report ? > Is this an architectural limitation of PCL ? > Is there more documentation than what is in the perf directory in the 2.6.31 > tarball ?
You can find a description and a tutorial here:
http://lwn.net/Articles/339361/
There's also http://perf.wiki.kernel.org.
Ingo
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