linux-kernel - Re: [patch 1/6] mm: bdi: tweak task dirty penalty

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Message-Id: <20080130161352.4dae48e3.akpm@linux-foundation.org>
Date:	Wed, 30 Jan 2008 16:13:52 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	a.p.zijlstra@...llo.nl, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch 1/6] mm: bdi: tweak task dirty penalty

On Tue, 29 Jan 2008 16:49:01 +0100
Miklos Szeredi <miklos@...redi.hu> wrote:

> Penalizing heavy dirtiers with 1/8-th the total dirty limit might be rather
> excessive on large memory machines. Use sqrt to scale it sub-linearly.

Then again, it might not be.

I'll skip this one.  Please resend if/when it is proven to be a net benefit
across a broad range of workloads.  And stuff like that.
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