linux-kernel - Re: Scheduler broken? sdhci issues with scheduling

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Message-ID: <20080303220530.49201544@mjolnir.drzeus.cx>
Date:	Mon, 3 Mar 2008 22:05:30 +0100
From:	Pierre Ossman <drzeus-list@...eus.cx>
To:	Pavel Machek <pavel@....cz>
Cc:	huggie@...th.li, linux-kernel@...r.kernel.org
Subject: Re: Scheduler broken? sdhci issues with scheduling

On Mon, 3 Mar 2008 21:38:08 +0100
Pavel Machek <pavel@....cz> wrote:

> On Mon 2008-03-03 20:43:00, Pierre Ossman wrote:
> > The problem is that the kernel sleeps _less_ than asked for, not more. No hardware can be expected to work if its needed delays aren't respected.
> > 
> 
> Oops, that's bad. Can you perhaps create small testcase for
> scheduler/timer people to play with?
> 
> Also... you may want to switch timesources. notsc fixed "wait for much
> too long" for me.

I'm afraid I could never reproduce the problem. So it's Simon that will have to do the tests for now..


-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  PulseAudio, core developer          http://pulseaudio.org
  rdesktop, core developer          http://www.rdesktop.org
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