Re: [PATCH 0/9] Per-cgroup /proc/stat

[Andi Kleen]

Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> writes:
>
> Guys we should seriously trim back a lot of that code, not grow ever
> more and more. The sad fact is that if you build a kernel with
> cpu-cgroup support the context switch cost is more than double that of a
> kernel without, and then you haven't even started creating cgroups yet.

That sounds indeed quite bad. Is it known why it is so costly?

-Andi
-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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