Messages in this thread | | * Peter Zijlstra <peterz@infradead.org> wrote:
> On Sun, 2010-01-31 at 22:07 +0100, Frederic Weisbecker wrote: > > > > - We are using the -M option from perf tools which multiplexes every > > event buffers, which means every cpu commit their lock events in > > the same buffer. Couple that with the two above reasons, it's supposed > > to scale at worst. > > Why are you doing that? That seems like asking for trouble..
But as i said i already tried with -M off and it didnt cure the slowdown.
that -M was just copied over from perf sched (where it makes sense).
Ingo
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