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[Bug 1316110] [NEW] perf samples too long

 

Public bug reported:

I always see these lines in `dmesg` and wonder what these mean:
[ 3805.057535] perf samples too long (2507 > 2500), lowering kernel.perf_event_max_sample_rate to 50000

They repeat often and I think the value
kernel.perf_event_max_sample_rate should be somehow optimized. How can I
do that?

Or it is a bug?

Thanks
Michael

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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https://bugs.launchpad.net/bugs/1316110

Title:
  perf samples too long

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I always see these lines in `dmesg` and wonder what these mean:
  [ 3805.057535] perf samples too long (2507 > 2500), lowering kernel.perf_event_max_sample_rate to 50000

  They repeat often and I think the value
  kernel.perf_event_max_sample_rate should be somehow optimized. How can
  I do that?

  Or it is a bug?

  Thanks
  Michael

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