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DateSun, 29 Apr 2007 08:59:01 +0200
FromIngo Molnar <>
SubjectRe: [patch] CFS scheduler, -v6
* Willy Tarreau <w@1wt.eu> wrote:

> I don't know if Mike still has problems with SD, but there are now 
> several interesting reports of SD giving better feedback than CFS on 
> real work. In my experience, CFS seems smoother on *technical* tests, 
> which I agree that they do not really simulate real work.

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!)

	Ingo
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