[PlanetCCRMA] Problem with qjackctl in Fedora 14
David Cornette
david at davidcornette.com
Wed Dec 29 12:03:32 PST 2010
On Wed, Dec 29, 2010 at 11:48:36AM -0800, Fernando Lopez-Lezcano wrote:
> You can add this file (name it "90-jack.conf") to the
> /etc/security/limits.d/:
>
> ---- CUT HERE
> # Planet CCRMA, jack-audio-connection-kit
> #
> # Allow processes access to rt priority and memory locking
> # without limits, needed by the rt kernel and jackd
> * - rtprio 99
> * - memlock 4194304
> -- CUT HERE
>
> This will allow all users to use the full range of priorities for
> realtime scheduling. This is (as has been pointed out before) the most
> secure option.
How is this the most secure option? For most people here, who have single user, dedicated machines used for audio (at least I am guessing that is the most typical use case), it won't make any difference, but isn't it generally considered more secure to limit the permissions for real time capabilities so a malicious user can't lock up the machine? It is simplest, though.
>
> I have to see what is the best solution for this long term (probably an
> additional package in the Planet CCRMA repository)...
>
Why not put the limits.conf stuff in the rtirq package? Isn't it the one that really needs to be able to set the priorities to the high values?
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