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Groups > linux.kernel > #1602719
| From | Vince Weaver <vincent.weaver@maine.edu> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: perf: massive perf_event slowdown between 4.9 and 4.11-rc |
| Date | 2017-03-16 19:00 +0100 |
| Message-ID | <tlHQR-1Mk-15@gated-at.bofh.it> (permalink) |
| References | <tlFYK-td-29@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, 16 Mar 2017, Vince Weaver wrote: > Anyway all perf_event functionality (especially reads) has become about > 20x slower, at least on Intel machines (haswell and skylake are the only > ones I've tested) sometime between 4.9 and 4.11-rc False alarm, I forgot I had debugging (KASAN, etc) turned on in this kernel tree because I had been fuzzing. sorry about that. Vince
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perf: massive perf_event slowdown between 4.9 and 4.11-rc Vince Weaver <vincent.weaver@maine.edu> - 2017-03-16 17:00 +0100
Re: perf: massive perf_event slowdown between 4.9 and 4.11-rc Vince Weaver <vincent.weaver@maine.edu> - 2017-03-16 19:00 +0100
Re: perf: massive perf_event slowdown between 4.9 and 4.11-rc Peter Zijlstra <peterz@infradead.org> - 2017-03-16 20:00 +0100
Re: perf: massive perf_event slowdown between 4.9 and 4.11-rc Peter Zijlstra <peterz@infradead.org> - 2017-03-16 19:20 +0100
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