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- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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