Messages in this thread | | | Subject | Re: [PATCH RT] Add histograms of potential and effective wakeup latencies | From | Steven Rostedt <> | Date | Mon, 14 Sep 2009 21:01:12 -0400 |
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On Tue, 2009-09-15 at 02:20 +0200, Carsten Emde wrote: > Resuscitated and enhanced the kernel latency histograms provided > originally by Yi Yang and adapted and converted by Steven Rostedt. > > Latency histograms in the current version > - can be enabled online and independently > - have virtually no performance penalty when configured but not enabled > - have very little performance penalty when enabled > - use already available wakeup and switch tracepoints > - give corresponding results with the related tracer > - allow to record wakeup latency histograms of a single process > - record the process where the highest wakeup latency occurred > - are documented in Documentation/trace/histograms.txt > > Signed-off-by: Carsten Emde <C.Emde@osadl.org>
I did a quick scan of the patch and this looks much nicer.
Good work!
Acked-by: Steven Rostedt <rostedt@goodmis.org>
-- Steve
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