linux-kernel - Re: [PATCH v2 0/8] Fix performance issue with ondemand governor

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Date:	Sun, 9 May 2010 19:49:36 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	linux-kernel@...r.kernel.org, davej@...hat.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH v2  0/8] Fix performance issue with ondemand governor


* Arjan van de Ven <arjan@...radead.org> wrote:

> [Version 2 includes the acks/etc. Andrew: no changes from the patches that 
> are in -mm]
> 
> There have been various reports of the ondemand governor causing some 
> serious performance issues, one of the latest ones from Andrew. There are 
> several fundamental issues with ondemand (being worked on), but the report 
> from Andrew can be fixed relatively easily.
> 
> The fundamental issue is that ondemand will go to a (too) low CPU frequency 
> for workloads that alternatingly disk and CPU bound...

I've applied your series to sched/core and started testing it, thanks Arjan!

	Ingo
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