From: Jens Axboe <axboe@suse.de>
To: Dave Jones <davej@codemonkey.org.uk>,
vojtech@suse.cz, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: PS2 mouse going nuts during cdparanoia session.
Date: Wed, 16 Jul 2003 19:13:23 +0200 [thread overview]
Message-ID: <20030716171323.GL833@suse.de> (raw)
In-Reply-To: <20030716170911.GB21896@suse.de>
On Wed, Jul 16 2003, Dave Jones wrote:
> On Wed, Jul 16, 2003 at 07:03:52PM +0200, Jens Axboe wrote:
>
> > > It only happens whilst cdparanoia is reading from the CD.
> > > The IDE CD drive is using DMA, and interrupts are unmasked.
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > Yes. You can try and make the situation a little better by unmasking
> > interrupts with -u1.
>
> See above 8-) It was the first thing I tried when I observed this phenomenon.
Oh right, sorry.
> > Or you can try and use a ripper that actually uses
> > SG_IO, that way you can use dma (and zero copy) for the rips. That will
> > be lots more smooth.
>
> Ah right, I thought cdparanoia was still ripper de jour..
> What's recommended these days?
It is, unfortunately it uses read/write on /dev/sg* directly so cannot
be used with "new path" that is so much faster. It's been a while since
I looked, I can check for a good cdda ripper that uses SG_IO tomorrow if
you don't find one first.
I'm about to cave in and add block emulation of that part, too. It's a
bit more code, though.
--
Jens Axboe
next prev parent reply other threads:[~2003-07-16 17:00 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-16 16:57 PS2 mouse going nuts during cdparanoia session Dave Jones
2003-07-16 17:03 ` Jens Axboe
2003-07-16 17:09 ` Dave Jones
2003-07-16 17:13 ` Jens Axboe [this message]
2003-07-16 17:20 ` Dave Jones
2003-07-16 17:24 ` Jens Axboe
2003-07-16 17:21 ` Markus Plail
2003-07-16 17:10 ` Alan Cox
2003-07-16 17:16 ` Jens Axboe
2003-07-16 17:23 ` Dave Jones
2003-07-16 17:25 ` Jens Axboe
2003-07-16 17:28 ` Dave Jones
2003-07-16 17:31 ` Jens Axboe
2003-07-16 18:22 ` Alan Cox
2003-07-16 19:03 ` Kristofer T. Karas
2003-07-16 19:13 ` Valdis.Kletnieks
2003-07-16 19:00 ` Vojtech Pavlik
2003-07-16 19:30 ` Dave Jones
2003-07-16 20:53 ` Vojtech Pavlik
2003-07-16 23:31 ` Dave Jones
2003-07-16 23:47 ` Vojtech Pavlik
2003-07-17 11:15 ` Alan Cox
2003-07-17 17:08 ` Dave Jones
2003-07-16 18:00 ` Andrew Morton
2003-07-16 18:56 ` Vojtech Pavlik
2003-07-16 21:05 ` Andries Brouwer
2003-07-16 17:10 ` Valdis.Kletnieks
2003-07-16 17:17 ` Jens Axboe
2003-07-16 17:55 ` Dave Jones
2003-07-16 17:57 ` Jens Axboe
[not found] ` <1058422511.1164.1440.camel@workshop.saharacpt.lan>
2003-07-17 12:39 ` Dave Jones
2003-07-16 23:43 Mikael Pettersson
2003-07-17 2:03 ` Jacek Kawa
2003-07-17 21:44 ` Jacek Kawa
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