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SubjectRe: perf samples too long without perf running (?!?)
On 2014.03.08 at 08:51 +0100, Mike Galbraith wrote:
> On Fri, 2014-03-07 at 17:57 -0800, Andy Lutomirski wrote:
> > On recent (3.13) kernels, I'm frequently getting messages like:
> >
> > perf samples too long (2503 > 2500), lowering
> > kernel.perf_event_max_sample_rate to 50000
> >
> > a few seconds to minutes after bootup. As far as I know, I'm not
> > using perf. What's going on here?
>
> 14c63f17b1
>
> I get those all the time too, just building kernels.

I have:
echo 0 > /proc/sys/kernel/perf_cpu_time_max_percent
in my local startup script since that commit.

--
Markus


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