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Date: 23 Jul 2007 22:00:02 +0200 From: Andi Kleen <andi@...stfloor.org> To: Tong Li <tong.n.li@...el.com> Cc: mingo@...e.hu, linux-kernel@...r.kernel.org Subject: Re: [RFC] scheduler: improve SMP fairness in CFS Tong Li <tong.n.li@...el.com> 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/