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

Andi Kleen
2007-10-01T11:57:31Z

On Mon, Oct 01, 2007 at 02:52:03PM +0300, Denys wrote:
> Hi
>
> No major differences.
> Some procedures higher a bit, some lower a bit, but everything looks fine on
> both kernels.
>
> Thats what i tried first - oprofile, and only one keypoint i was able to catch
> - in top softirqd/0 or /1 shows usage 100% cpu, and in mpstat - soft% also
> reaching 100%.

Then you likely just have higher load. What makes you think this
is a kernel problem?

-Andi