[linux-audio-user] Some various questions about system configuration..

[Dana Olson]

On 2/3/06, Lee Revell <rlrevell at joe-job.com> wrote:
> On Thu, 2006-02-02 at 20:24 -0500, Dana Olson wrote:
> > I don't know check, exactly. Is it by version? Debian Sid appears to
> > have libc6 (2.3.5-12) according to the package list. I'm running
> > Breezy here, 2.3.2.
> > Dana
> >
>
> OK here is my message to the Ubuntu developers and their response.
> Briefly, if we can submit the needed patches by the 26th, then Dapper
> will support the new rlimits.


This is certainly beyond the scope of my current knowledge. I would
like to help, but I don't think I can research and learn that all
before the deadline. Do you know anyone who would help out with this?

Also, I would like to forward that on to Mark and see what he says.

The motivation is the entire musician community who wants to not leave
Ubuntu... It's not just a request from you, but really a request made
on behalf of all potential Ubuntu musicians.
Dana

> On Thu, Feb 02, 2006 at 04:48:20PM -0500, Lee Revell wrote:
> > The new RLIMIT_RTPRIO was introduced in kernel 2.6.12 to selectively
> > allow non-root processes to run tasks with realtime priority.  This is
> > essential if we ever want reliable multimedia performance without
> > forcing users to run as root.
> >
> > Supporting this new rlimit requires some changes to glibc, bash, and
> > PAM.  It was added to glibc 6 months ago:
> >
> > http://sourceware.org/ml/libc-hacker/2005-06/msg00005.html
> >
> > Presumably Dapper will ship with a post 2.6.12 kernel - so will Dapper
> > ship with full userspace support for this new rlimit?
> >
> > I checked the current glibc sources and these new RLIMITs are not yet
> > supported...
>
> Dapper feature freeze begins 2006-02-23.  If you submit the appropriate
> non-invasive patches in time for them to be merged before that date, I
> see no reason not to include them.  However, as yet, there is no motive
> to push ahead of our upstreams on this point except for your request.
>
> --
>  - mdz
>
>