[linux-audio-user] Real-time kernel

Forest Bond forest at alittletooquiet.net
Thu Nov 30 10:01:45 EST 2006


On Thu, Nov 30, 2006 at 07:07:59AM -0500, Chuckk Hubbard wrote:
> On 11/29/06, Frank Barknecht <fbar at footils.org> wrote:
>
> lol, so I manually downloaded the libpam files from ubuntu, and all of
> their dependencies, and installed them all, and I now have 8 broken
> packages.  To reinstall those broken packages would remove hundreds,
> and to remove them would remove hundreds, like such favorites as bash
> and dpkg.  I'm just going to remove all these ubuntu libpam-related
> packages for now.  I have a sequencer working now in Windows with
> which to do my work (it's far easier to use than Rosegarden anyway),
> then when I have a week or so with no deadlines I'll try to get all
> this working.
> I must be doing something wrong.  I've had nothing but problems with
> Linux since I started, that no one else seems to have.
> 

Ubuntu Dapper & Edgy both have working PAM, no need to install anything from
third parties.  The documentation you are reading may be out of date.

Honestly, the only reason you would need the IRQ stuff is due to a mis-behaving
driver somewhere, right?  I've never messed with it.

As for /etc/sysconfig, that comes from Red Hat originally, I think.  I fail to
see the point of having it; /etc is already intended for system configuration
files :)

Personally, I no longer mess with all of this configuration work.  I find the
standard Ubuntu kernel under Dapper gave me reasonable performance.  The Edgy
kernel does not have real-time pre-emption enabled.  At the very least, it would
be easier to just re-compile Edgy's kernel with real-time preemption turned back
on.

As for your PAM configuration, this is what I use:
--------------------------------------------------------------------------------
@audio rtprio hard 99
@audio nice hard -20
--------------------------------------------------------------------------------

Then you just need to make sure your user is in group audio.

-Forest
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