linux-kernel - Re: [PATCH] Fix longstanding load balancing bug in the scheduler.

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Message-ID: <20060908130028.A9446@unix-os.sc.intel.com>
Date:	Fri, 8 Sep 2006 13:00:28 -0700
From:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
To:	Christoph Lameter <clameter@....com>
Cc:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>, akpm@...l.org,
	linux-kernel@...r.kernel.org, npiggin@...e.de, mingo@...e.hu
Subject: Re: [PATCH] Fix longstanding load balancing bug in the scheduler.

On Fri, Sep 08, 2006 at 11:40:51AM -0700, Christoph Lameter wrote:
> The balancing operation is not that frequent and having to treat a special 
> case in the callers would make code more complicated and likely offset the
> gains in this function.

This solution as such is not accurate and clean :) and my suggestion is
not making it any more ugly.

With increase in NR_CPUS, cost of cpumask operations will increase and 
we shouldn't penalize the other logical threads or cores sharing the caches by
bringing in unnecessary cache lines.

thanks,
suresh
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