Messages in this thread | | | Date | Sat, 8 Mar 2014 10:13:31 +0100 | From | Markus Trippelsdorf <> | Subject | Re: perf samples too long without perf running (?!?) |
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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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