Em Wed, Jan 06, 2016 at 08:37:53AM +0900, Namhyung Kim escreveu:
> On Tue, Jan 05, 2016 at 09:52:46PM +0100, Andi Kleen wrote:
> > > Btw, does anyone have some tips to add? :)
> > Use perf script to show individual samples
> > Use perf report --percent-limit 5 to only show entires above 5%
> > Use perf record -b -g / perf report --branch-history to show branch events
> > Use perf record -b / perf report to show branch mispredictions
> > Use perf report -M intel to show Intel style assembler
> > Use perf report --sort srcfile to sort by source file
> > Use perf report --sort symbol,srcline to sort by source line
> > Use perf record -e '{cycles,cache-misses}:S' / perf report --group to
> > associate events
> We should enable --group by default if recorded data file has groups IMHO.
> Arnaldo, could you please take this?
> https://lkml.org/lkml/2015/11/29/76
Sure, I thought I had merged that already, even noticed that yesterday,
when testing some stuff... Will do tomorrow.
> > Use perf mem record / perf mem report for memory address profiling
> > Use perf stat -I 1000 to count events in intervals
> > Use perf stat -I 1000 -x, to count events and output as CSV
> > Use perf timechart record / report to generate high level time line
> > Use perf probe --add kfunc / perf record -e kfunc to trace a custom trace
> > point
> Thanks for sharing!
> > You may also want to adapt some of Brendan's one liners:
> > http://www.brendangregg.com/perf.html
> Will take a look.
Yeah, that is another source, maybe Brendan can put those together in a
brendan.tips.txt that we could put in the /usr/lib/perf/tips/ directory?
;-) :-)
- Arnaldo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
