linuxaudio.org

Kim Cascone wrote:

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>    On 03/04/2011 11:09 AM, Renato wrote:

>> I'm missing something here - other than adding 2 lines

>> to /etc/security/limits.conf what other terminal black magic is needed

>> in order to run a fairly general (DAW + synths) linux audio environment?

>>

> it's more a case of 'endless iterative tweaking'

Because the FLOSS philosophy gives you all the options, while Windows

and Mac OS X don't.
> I for one have had issues with xruns since upgrading Jack and Ubuntu (I

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> know, don't say it)

> and certain apps cause xruns in differing amounts

> Yoshimi is unusable

Works fine here, with or without an RT kernel. But I use Debian, not Ubuntu.
> VLC still a problem, while Ardour, Phasex and Pd

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> seem less problematic

> haven't tested all my audio apps on my laptop but...

>

> I have spent way, way too much time tweaking

> /etc/security/limits.conf && /etc/security/audio.conf

> plus messing around with the priority/frames settings in Jack

> this is not a 'set and forget' sort of thing (for me at least)

> since params live in multiple places and are non-orthogonal - it's been

> like playing whack-a-mole

>

> there are some docs online which walk one through the process of

> optimizing a system for audio and setting up Jack but so far I'm still

> not able to arrive at a combination of settings that bring my system to

> xruns=0

xruns can also come from hardware that seems to be unrelated to audio.

For example, a laptop's wireless network driver that frequently checks

to see if there's a wireless connection to make, even when the wireless

adapter's antenna is turned off. (Mine does that. I guess the real

option there is to blacklist the wireless driver.) Or shared hardware

interrupts. Or the presence of binary blobs in the kernel, like NVidia's

proprietary driver.
--

David

gnome@hawaii.rr.com

authenticity, honesty, community

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