[Jackit-devel] Re: [PD-announce] Re: [linux-audio-dev] ANN: k_jack v0.0.0.5 and Mammut v0.15

[Paul Winkler]

On Wed, Jan 22, 2003 at 06:38:28PM +0100, Kjetil S. Matheussen wrote:
> Well, there have been reports about xruns. And, remember the resent
> discussion with the wine-guy that couldn't get it to run reliable without
> being root or have the capabilities patch?

Excerpt from the jack FAQ:

"""
Jack requires real-time scheduling (SCHED_FIFO) for reliable, dropout-free 
operation, which the vanilla Linux kernel does not adequately support.  
Andrew Morton's low-latency patches are currently the most functional 
way to add soft-RT scheduling to Linux... However, special privileges are 
required to enable low-latency operation, which can be acquired in two ways.

The first option is to run jackd as root in real-time mode...

A newer way to do things ...
requires processes to be able to grant their privileges to other 
processes using POSIX 1.e capabilities. 
"""

http://jackit.sourceforge.net/docs/faq.php


-- 

Paul Winkler
http://www.slinkp.com
Look! Up in the sky! It's TURTLE ZIRO!
(courtesy of isometric.spaceninja.com)