Messages in this thread | | | Date | Wed, 26 Jun 2013 17:50:48 +0200 | From | Ingo Molnar <> | Subject | Re: Scheduler accounting inflated for io bound processes. |
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* Peter Zijlstra <peterz@infradead.org> wrote:
> On Wed, Jun 26, 2013 at 11:37:13AM +0200, Ingo Molnar wrote: > > Would be very nice to randomize the sampling rate, by randomizing the > > intervals within a 1% range or so - perf tooling will probably recognize > > the different weights. > > You're suggesting adding noise to the regular kernel tick?
No, to the perf interval (which I assumed Mike was using to profile this?) - although slightly randomizing the kernel tick might make sense as well, especially if it's hrtimer driven and reprogrammed anyway.
I might have gotten it all wrong though ...
Thanks,
Ingo
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