Messages in this thread | | | Subject | Re: [git] CFS-devel, latest code | From | Daniel Walker <> | Date | Tue, 25 Sep 2007 08:17:53 -0700 |
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On Tue, 2007-09-25 at 08:45 +0200, Ingo Molnar wrote: > * Daniel Walker <dwalker@mvista.com> wrote: > > > On Mon, 2007-09-24 at 23:45 +0200, Ingo Molnar wrote: > > > Lots of scheduler updates in the past few days, done by many people. > > > Most importantly, the SMP latency problems reported and debugged by > > > Mike > > > Galbraith should be fixed for good now. > > > > Does this have anything to do with idle balancing ? I noticed some > > fairly large latencies in that code in 2.6.23-rc's .. > > any measurements?
Yes, I made this a while ago,
ftp://source.mvista.com/pub/dwalker/misc/long-cfs-load-balance-trace.txt
This was with PREEMPT_RT on btw, so it's not the most recent kernel. I was able to reproduce it in all the -rc's I tried.
Daniel
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