[linux-audio-user] rlimit problem on opensuse 10.0: pam_limits: unknown limit item 'rtprio'
core at jacklab.net
Fri Jan 6 16:31:59 EST 2006
> AFAICT the question really is _why_ the rlimits is not working on
> opensuse10 kernel-2.6.13-15.7 ? pam-0.80 looks to be rtprio ready ...
Same but different problem here.
As I do write in a posting before, our project jacklab working on a
opensuse based audio distribution named jad. For this we have to create
a standard opensuse 10.0 kernel with rt.
As Takashi giving us the advice, to using rtlimits / PAM instead of
So I asked in this mailinglist
Who has experiences with PAM?
The answer from Burghard Ritter:
> If you are using a recent kernel (>=2.6.12) and a recent pam-package
> (>=0.80) then, if I am right, everything sould already be working.
> would adjust the limits.conf to contain something like
> @audio - rtprio 100
> @audio - nice -10
> @audio - memlock 4000000
> Thus the group audio could run programs with realtime privileges.
Today we finshed a suse flavoured kernel with full realtime preemt.
2.6.15 with rt-patch ver rt1 and some other fixes (ipv6, some suse
I edited /etc/security/limits.conf as descripted by Burghard but I can't
get jackd to start.
> jack_create_thread: error -1 switching current thread to rt for inheritance: Unknown error 4294967295
Now we plan to patch some rt-lsm in our kernel...
Am Freitag, den 06.01.2006, 10:54 +0000 schrieb Rui Nuno Capela:
> Joern Nettingsmeier wrote:
> > hi everyone!
> > after some time of job-induced absence from audio work, i have tried to
> > bring my audio workstation up to date again.
> > the problem is that i can't get realtime privileges.
> > arch is x86_64, distro is opensuse 10.0, i'm using the distro kernel,
> > which is a 2.6.13 with additional patches.
> > my /etc/security/limits.conf:
> > @realtime - memlock 128000
> > @realtime - nice 10
> > @realtime - rtprio 70
> > the account i use is member of @realtime.
> > on login, i get
> > Jan 6 00:01:38 kleineronkel pam_limits: unknown limit item 'nice'
> > Jan 6 00:01:38 kleineronkel pam_limits: unknown limit item
> > 'rtprio'
> > and jack tells me it can't get rt scheduling. memlock works, though.
> > i browsed the kernel source, and it looks like the rlimit patch is there.
> > pam is recent:
> > pam-0.80-6
> > pam_ldap-178-3
> > pam-modules-10.0-11.2
> > the bash is not yet rlimits-aware (ulimit does not know about nice and
> > rtprio), but that should not be a problem, right?
> > is there a /proc or /sys file associated with the rlimits patch, so that
> > i can make sure my running kernel has it? or any other command-line
> > tools that might help to find the problem?
> > any hints appreciated.
> Yes, highly appreciated indeed. I'm on opensuse 10.0 too, and after
> realizing that rlimits are not working OTOB I always find myself patching
> the original kernel-source with realtime-lsm, over and over again.
> Anyone else?
> rncbc aka Rui Nuno Capela
> rncbc at rncbc.org
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