From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH 05/18] writeback: per task dirty rate limit
Date: Wed, 07 Sep 2011 09:31:56 +0200
Message-ID: <1315380716.11101.5.camel@twins>
References: <20110904015305.367445271@intel.com>
	 <20110904020915.240747479@intel.com> <1315324030.14232.14.camel@twins>
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Cc: "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,  Andrew
 Morton <akpm@linux-foundation.org>, Jan Kara <jack@suse.cz>, Christoph
 Hellwig <hch@lst.de>, Dave Chinner <david@fromorbit.com>, Greg Thelen
 <gthelen@google.com>, Minchan Kim <minchan.kim@gmail.com>,  Vivek Goyal
 <vgoyal@redhat.com>, Andrea Righi <arighi@develer.com>, linux-mm
 <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>
To: Wu Fengguang <fengguang.wu@intel.com>
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On Wed, 2011-09-07 at 09:04 +0800, Wu Fengguang wrote:

> So the sqrt naturally leads to less overheads and more N tolerance for
> large memory servers, which have large (thresh-freerun) gaps.

Thanks, and as you say its an initial guess, later refined using patch
14.

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