[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
> 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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