Re: Linux 2.6.23

[Ingo Molnar]

* Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:

> ;) I think you snipped the important bit:
> 
> "the peak is terrible but it has virtually no dropoff and performs 
> better under load than the default 2.6.21 scheduler." (verbatim)

hm, i understood that peak remark to be in reference to FreeBSD's 
scheduler (which the FreeBSD guys are primarily interested in 
obviously), not v2.6.21 - but i could be wrong.

In any case, there is indeed a regression with sysbench and a low number 
of threads, and it's being fixed. The peak got improved visibly in 
sched-devel:

  http://people.redhat.com/mingo/misc/sysbench-sched-devel.jpg

but there is still some peak regression left, i'm testing a patch for 
that.

	Ingo
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