On Mon, Nov 11, 2013 at 02:56:37PM +0100, Ingo Molnar wrote: > > * Frederic Weisbecker <fweis...@gmail.com> wrote: > > > On Mon, Nov 11, 2013 at 01:13:52PM +0100, Ingo Molnar wrote: > > > > > > It's not an irrelevant feature at all! :-) > > > > > > It's just that for any sort of longer profile it was pretty > > > difficult/frustrating to use, which I think held back adoption. > > > > > > That performance problem got fixed now by you and Namhyung, so I think > > > we'll see even wider adoption of call-graph profiling... > > > > Ah I see now. At the time Linus reported his issue, I had the feeling > > his usecase was a bit "extreme", but I actually have no idea how far > > perf can be used given that I'm mostly used to short benchmarks, > > typically hackbench, perf bench sched messaging et al. Thing is I don't > > use it enough for my real usecases :) > > Well, it's a bit of a catch-22: if there are severe scalability problems > for a usecase then people won't use it because they cannot use it. So > developers should usually try to over-measure things and go for extreme > uses and such.
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