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

[Andi Kleen]

Tong Li <tong.n.li@xxxxxxxxx> writes:
> +
> +        read_lock_irqsave(&dwrr_highest_lock, flags);

That lock looks like it would bounce between CPUs like crazy.
Did you try any benchmarks on a larger system? 

-Andi
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