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Date: Wed, 03 Aug 2005 20:25:44 +1000
From: Nick Piggin <nickpiggin@yahoo.com.au>
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To: Ingo Molnar <mingo@elte.hu>
CC: Andrew Morton <akpm@osdl.org>,
       "Siddha, Suresh B" <suresh.b.siddha@intel.com>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Jack Steiner <steiner@sgi.com>
Subject: Re: [patch 2/2] sched: reduce locking in periodic balancing
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Ingo Molnar wrote:

[...]

Thanks for the corrections.

> 
> btw., holding the runqueue lock during the initial scanning portion of 
> load-balancing is one of the top PREEMPT_RT critical paths on SMP. (It's 
> not bad, but it's one of the factors that makes SMP latencies higher.)
> 

Good, I'm glad they will be of some immediate help.

> Acked-by: Ingo Molnar <mingo@elte.hu>
> 

Thanks.

-- 
SUSE Labs, Novell Inc.

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