Re: [xine-user] what's the deal with /dev/rdvd?

[Chris M. <maj...@cs...>]

Thanks for the  info. I built a 2.2.19 kernel, but  after booting it I
still don't see anything called "raw" in /proc/devices. Anybody have a
2.2.x kernel that does?
-chris


> On Fri, 30 Mar 2001, Chris Majewski wrote:
> 
> > What's  the deal  with  /dev/rdvd? How  does  it work?  Is it  faster?
> > Louder? More expensive? Can I set it up with kernel 2.2.17? How? I did
> > RTFM about this somewhere but not very successfully.
> 
> It's a character IO device interface that you can assign a block device
> to, and it actually speeds Xine up somewhat (on my PIII-650, the CPU usage
> drops from ~60% to 30-40%). I don't know if 2.2.17 supported it, but do
> 'cat /proc/devices' and see if char major 162 (raw) is available. I think
> 2.2.19 (and maybe 18?) supports it. You'll also need an updated util-linux
> package (which includes the "raw" utility, for binding a raw devnode to a
> block device) so that you can bind a raw device node to the DVD drive's
> bloce device. See linux/Documentation/devices.txt for info on the devnodes
> to set up to support it, and 'man raw' after installing the updated
> util-linux to see how to use it.