Messages in this thread | | | Subject | Re: [announce] CFS-devel, performance improvements | From | Mike Galbraith <> | Date | Wed, 12 Sep 2007 08:20:21 +0200 |
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On Tue, 2007-09-11 at 22:04 +0200, Ingo Molnar wrote: > fresh back from the Kernel Summit, Peter Zijlstra and me are pleased to > announce the latest iteration of the CFS scheduler development tree. Our > main focus has been on simplifications and performance - and as part of > that we've also picked up some ideas from Roman Zippel's 'Really Fair > Scheduler' patch as well and integrated them into CFS. We'd like to ask > people go give these patches a good workout, especially with an eye on > any interactivity regressions.
Initial test-drive looks good here, but I do see a regression. First the good news.
fairtest2 is perfect, more perfect than ever seen before in fact. Mixed interval sleepers/hog looks fine as well (can't say perfect due to startup differences with the various proggies, but cpu% looks perfect). Amarok song switch time under hefty kbuild load is fine as well. I haven't done heavy multimedia testing yet, but will give it a more thorough workout later (errands).
The regression: I see some GUI lurch, easily reproducible by running a make -j5 and moving the mouse in a circle... perceptible (100ms or so) lurches not present in rc5.
-Mike
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