| Re: [proaudio] Real-time for audio |
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- To: proaudio@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [proaudio] Real-time for audio
- From: Grant <emailgrant@xxxxxxxxx>
- Date: Fri, 7 May 2010 10:26:49 -0700
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> With a rt kernel, you can setup both the hardware priorities and the software
> priorities. That mean that tasks accessing some hardware, the sound card, will
> have the priority over the other tasks, and that tasks executed by a given user
> or group [the audio group] will have priority over the other. rtirq will dot
> that for you. Just emerge it and add it into the default run level.
Is jack necessary for me then? What I want to do is use my USB DAC
and mpd (music player app) in real time. Maybe jack is necessary if I
want to know *how* real time it is?
> Be aware that if you don't really need a rt kernel, it is best to not use it,
> because such a kernel can cause compilation failures with gcc.
> http://bugs.gentoo.org/show_bug.cgi?id=190462
> http://bugs.gentoo.org/show_bug.cgi?id=20600
> For that raeson, if you want to use a rt kernel, it is good practice to have
> another kernel of the same version, vanilla or gentoo sources, and reboot on
> this non rt kernel when using emerge.
I noticed this when trying to emerge nvidia-drivers.
Thanks,
Grant