linux-kernel - Re: [RFC] scheduler: improve SMP fairness in CFS

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Message-ID: <46A51CB8.1090400@nortel.com>
Date:	Mon, 23 Jul 2007 15:25:12 -0600
From:	"Chris Friesen" <cfriesen@...tel.com>
To:	"Li, Tong N" <tong.n.li@...el.com>
CC:	Andi Kleen <andi@...stfloor.org>, mingo@...e.hu,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] scheduler: improve SMP fairness in CFS

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...

Chris
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