Messages in this thread | | | Date | Mon, 27 Oct 2008 14:42:55 +0100 (CET) | From | Jiri Kosina <> | Subject | Re: [tbench regression fixes]: digging out smelly deadmen. |
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On Mon, 27 Oct 2008, Mike Galbraith wrote:
> > real world workloads. If your fairness hurts throughput that much maybe > > your scheduler algorithm is just plain *wrong* as it isn't adapting to > > workload at all well. > Doesn't seem to be scheduler/fairness. 2.6.22.19 is O(1), and falls > apart too, I posted the numbers and full dbench output yesterday.
We'll need to look into this a little bit more I think. I have sent out some numbers too, and these indicate very clearly that there is more than 50% performance drop (measured by dbench) just after the very merge of CFS in 2.6.23-rc1 merge window.
-- Jiri Kosina SUSE Labs
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