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Subjectperf samples too long without perf running (?!?)
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?

--Andy


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