* David Ahern <dsah...@gmail.com> wrote: > On 11/6/13, 4:47 AM, Ingo Molnar wrote: > >I'm not too worried about call-graph 'legacies': it generates such huge > >perf.data files which is parsed so slowly at the moment that there's very > >little user base ... Anyone who absolutely needs call-graph profiling uses > >SysProf which performs well. > > Actually, perf with callchains is used quite heavily on my products. > One of the selling points of perf.
That's nice to hear :) In what way is call-graph profiling utilized typically? Is it system-wide, i.e. something like: perf record -a -g sleep 10 ? If yes then that would explain why scalability problems rarely surfaced, it takes a longer user-space profile to get to the event counts where scalability started hurting. Thanks, Ingo -- 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/