Date: Wed, 5 Dec 2007 10:34:12 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Gregory Haskins <ghaskins@novell.com>
Cc: rostedt@goodmis.org, linux-rt-users@vger.kernel.org,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] Subject: SCHED - Use a 2-d bitmap for searching
	lowest-pri CPU
Message-ID: <20071205093412.GA17911@elte.hu>
References: <20071205025137.4494.18683.stgit@novell1.haskins.net> <20071205025538.4494.52380.stgit@novell1.haskins.net>
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* Gregory Haskins <ghaskins@novell.com> wrote:

> The current code use a linear algorithm which causes scaling issues on 
> larger SMP machines.  This patch replaces that algorithm with a 
> 2-dimensional bitmap to reduce latencies in the wake-up path.

hm, what kind of scaling issues - do you have any numbers? What workload 
did you measure and on what hardware?

	Ingo
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