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Message-ID: <20080302104031.GB3861@ucw.cz>
Date: Sun, 2 Mar 2008 11:40:31 +0100
From: Pavel Machek <pavel@....cz>
To: huggie@...th.li, linux-kernel@...r.kernel.org
Subject: Re: Scheduler broken? sdhci issues with scheduling
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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