Messages in this thread | | | Subject | Re: [patch] CFS scheduler, -v6 | From | Kasper Sandberg <> | Date | Sun, 29 Apr 2007 19:09:27 +0200 |
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On Sun, 2007-04-29 at 08:42 -0700, Ray Lee wrote: > On 4/29/07, Kasper Sandberg <lkml@metanurb.dk> wrote: > > On Sun, 2007-04-29 at 08:59 +0200, Ingo Molnar wrote: > > > well, there are several reports of CFS being significantly better than > > > SD on a number of workloads - and i know of only two reports where SD > > > was reported to be better than CFS: in Kasper's test (where i'd like to > > > know what the "3D stuff" he uses is and take a good look at that > > > workload), and another 3D report which was done against -v6. (And even > > > in these two reports the 'smoothness advantage' was not dramatic. If you > > > know of any other reports then please let me know!) > > > > I can tell you one thing, its not just me that has observed the > > smoothness in 3d stuff, after i tried rsdl first i've had lots of people > > try rsdl and subsequently sd because of the significant improvement in > > smoothness, and they have all found the same results. > > > > The stuff i have tested with in particular is unreal tournament 2004 and > > world of warcraft through wine, both running opengl, and consuming all > > the cpu time it can get. > > [snip more of sd smoother than cfs report] > > WINE is an interesting workload as it does most of its work out of > process to the 'wineserver', which then does more work out of process > to the X server. So, it's three mutually interacting processes total, > once one includes the original client (Unreal Tournament or World of > Warcraft, in this case). the wineserver process is using next to no cpu-time compared to the main process..
> > Perhaps running one of the windows system performance apps (that can > be freely downloaded) under WINE would give some hard numbers people > could use to try to reproduce the report. > > Ray >
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