Re: [RFC] scheduler: improve SMP fairness in CFS

[Andi Kleen]

On Mon, Jul 23, 2007 at 03:25:12PM -0600, Chris Friesen wrote:
> Li, Tong N wrote:
> >On the other hand, if locking does
> >become a problem for certain systems/workloads, increasing
> >sysctl_base_round_slice can reduce the locking frequency and alleviate
> >the problem, at the cost of being relatively less fair across the CPUs. 
> 
> If locking does become a problem, it may make sense to switch instead to 
> a lockless algorithm of some sort...

That usually has the same issue with cache lines. It would be better
to analyze first if such global synchronization is really needed.
I hope not.

-Andi
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