linux-kernel - Re: [PATCH 0/2] pdflush fix and enhancement

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Message-ID: <87fxk5ur0h.fsf@basil.nowhere.org>
Date:	Wed, 31 Dec 2008 01:28:46 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Peter W Morreale <pmorreale@...ell.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] pdflush fix and enhancement

Peter W Morreale <pmorreale@...ell.com> writes:

> The following series implements a fix for pdflush thread creation and an
> enhancement for allowing the setting of the minimum and maximun number
> of pdflush threads. 

You forgot to state why the admin should control that?

Each sysctl essentially presents a failure of the automatic tuning
algorithms of the kernel (kernel hackers admitting defeat). 

So a patch adding new ones at least needs a clear rationale what
problem it is trying to fix and why the automatic tuning cannot be
fixed instead to address this case without new knobs.

-Andi

-- 
ak@...ux.intel.com
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