Re: 2.6.21 -> 2.6.22 & 2.6.23-rc8 performance regression

Denys
2007-10-01T10:31:18Z

Already i did, and it didn't show real failure point.

On 01 Oct 2007 12:01:24 +0200, Andi Kleen wrote
> "Denys" <nuclearcat@nuclearcat.com> writes:
>
> > by mistake i will miss a point (it can detect bug easily, IF softirq in
> > mpstat 1 will jump up to 30+%. On 2.6.21 it is always staying +-10%, on
> > "buggy" version it jumps up to 100%. Now cause less load at night up to 30-
> > 50%, so on hardware it is not very noticeable (thats why maybe not much
> > feedbacks), i am trying to utilise hardware maximum as possible - so i feel
> > regressions much more.
>
> You could use oprofile to find where the CPU time is spent
>
> -Andi