Date: Sun, 2 Mar 2008 11:40:31 +0100
From: Pavel Machek <pavel@ucw.cz>
To: huggie@earth.li, linux-kernel@vger.kernel.org
Subject: Re: Scheduler broken? sdhci issues with scheduling
Message-ID: <20080302104031.GB3861@ucw.cz>
References: <20080229115256.GG24533@paranoidfreak.co.uk>
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On Fri 2008-02-29 11:52:57, Simon Huggins wrote:
> [ Please Cc me on replies ]
> 
> I had a bug with sdhci which Pierre Ossman looked at for me.
> 
> In the end essentially the fix was to use HZ=1000 and nothing else.
> Pierre seemed to think that this was a bug in the scheduler.
> 
> I'm interested if someone who groks the scheduler could take a look at
> the mmc/* code and see if it's abusing HZ or if there's anything
> obviously wrong there.  If it's not then perhaps there really is a bug
> in the scheduler?

Is mmc slow or does it just break down? Slow would be expected, but
breaking down should be fixed in MMC, too...

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