Re: [linux-audio-dev] Other real-time options

On Fri, 2005-04-08 at 12:31, Jack O'Quin wrote:
> Fernando Lopez-Lezcano <nando@email-addr-hidden> writes:
>
> > Hmmm, I'm getting really confused, I thought that the realtime lsm was
> > the one that was in 'mm (maybe none of them are?). Finally I found the
> > followup article on lwn that mentioned this:
> >
> > http://lwn.net/Articles/121887/
> >
> > "...The end result is that the rlimit patch has come back out of -mm..."
> >
> > Maybe it was put back again afterwards? (this was reported on February
> > 10). Hard to follow all that's happening...
>
> Difficult and frustrating.
>
> The kernel developers have decided not to merge the realtime-lsm,
> after all.

Sigh... again? :-[ :-{ :-<

> Instead, they propose an rlimits extension for granting
> per-user realtime scheduling privileges. This does (barely) meet our
> minimum needs.

I have not followed the details, I presume this could be per-group,
right? What are the details on how use will be controlled, if you care
to comment (PAM?)? You would not have a thread url by chance?

> It is inferior to the realtime-lsm solution for several reasons I feel
> too tired and discouraged to repeat again here. (Those who care
> should look the discussion up in the LKML archives.) It all smells
> like NIH syndrome to me (Not Invented Here). Since their solution
> won't be available for end-users until all the shells and PAM modules
> have been updated and everyone has upgraded to new distributions, I'll
> continue supporting the SourceForge realtime-lsm package for another
> year or two, as long as we still need it.

Very grateful that you are going to do that... I guess I'll have to
continue churning out kernels that include it.

> I came away dissatisfied with the whole experience. There are a
> number of very good Linux kernel developers, but they tend to get
> outshouted by a large crowd of arrogant fools. Trying to communicate
> user requirements to these people is a waste of time. They are much
> too "intelligent" to listen to lesser mortals.

I read through several threads (I'm not in lkml, sorry) and that is also
the impression I get. I'm really impressed by all the efforts you and
many others have made to make linux usable out of the box for pro-audio
(whatever that is) and for mere "mortals".

-- Fernando
Received on Sat Apr 9 00:15:13 2005