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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Joerg.Schilling@fokus.fraunhofer.de (Joerg Schilling)
Cc: htejun@gmail.com, linux-kernel@vger.kernel.org
Subject: Re: Again... DMA speed too slow
Date: Mon, 14 Apr 2008 17:56:36 +0100 [thread overview]
Message-ID: <20080414175636.4ea815dc@core> (raw)
In-Reply-To: <48038c3e.P3RWjRNXsDrhjIX7%Joerg.Schilling@fokus.fraunhofer.de>
On Mon, 14 Apr 2008 18:54:22 +0200
Joerg.Schilling@fokus.fraunhofer.de (Joerg Schilling) wrote:
> >Which controller are you on? I bet the recording itself will work fine
> >on 48x. It's probably that READ/WRITE BUFFERs are executed using PIO
> >for compatibility reasons.
>
> If this happens inside Linux, Linux should be changed...
The cases Linux falls back to PIO are the cases where the hardware isn't
up to it, or reliably handling some DMA commands. Lots of that about in
the PC world.
> 2.01.01a38 is the latest. Install cdrecord suid root
Remarkably brave ;)
next prev parent reply other threads:[~2008-04-14 17:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-14 16:54 Again... DMA speed too slow Joerg Schilling
2008-04-14 16:56 ` Alan Cox [this message]
2008-04-14 17:19 ` Joerg Schilling
2008-04-14 17:29 ` Alan Cox
2008-04-14 17:44 ` Alan
2008-04-14 18:28 ` Joerg Schilling
2008-04-14 18:21 ` Joerg Schilling
[not found] <fa.kS8AgwgGnOORqOO36Liq2hSrgfI@ifi.uio.no>
2008-03-31 0:59 ` Robert Hancock
-- strict thread matches above, loose matches on Subject: below --
2008-03-30 21:53 J.A. Magallón
2008-04-02 7:16 ` Andrew Morton
2008-04-13 2:23 ` Tejun Heo
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