Re: Scheduler accounting inflated for io bound processes.

[Ingo Molnar]

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> 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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