Comments for Linux Live http://linuxlive.ponderworthy.org Getting Linux hardened and ready for live audio and other hard work Mon, 07 Jun 2010 22:58:39 +0000 hourly 1 http://wordpress.org/?v=3.0.1 Comment on Use all of your cores on multicore CPU (command line) by Ole Tangehttp://linuxlive.ponderworthy.org/2010/03/04/use-all-of-your-cores-on-multicore-cpu-command-line/comment-page-1/#comment-361 Ole Tange Mon, 07 Jun 2010 22:58:39 +0000 http://linuxlive.ponderworthy.org/?p=335#comment-361 You may also be interested in looking at GNU Parallel http://www.gnu.org/software/parallel/ It solves many of the same problems but often has a more readable syntax. You may also be interested in looking at GNU Parallel http://www.gnu.org/software/parallel/
It solves many of the same problems but often has a more readable syntax.

]]> Comment on ALSA and Jack Cooperate using PulseAudio by whammohttp://linuxlive.ponderworthy.org/2009/10/29/coexisting-alsa-and-jack-with-pulseaudio/comment-page-1/#comment-315 whammo Tue, 18 May 2010 08:33:27 +0000 http://linuxlive.joshuacorps.org/?p=57#comment-315 It has been pointed out that Xubuntu does not implement Pulse, I'd like to point out Kubuntu does not either. Pretty sure any distro that does not depend on current Gnome will not force it.It's nice to try to find the silver lining, but for matters of latency in realtime, there can be no compromise. It has been pointed out that Xubuntu does not implement Pulse, I’d like to point out Kubuntu does not either. Pretty sure any distro that does not depend on current Gnome will not force it.

It’s nice to try to find the silver lining, but for matters of latency in realtime, there can be no compromise.

]]> Comment on Causes of ALSA Confusion by adminhttp://linuxlive.ponderworthy.org/2009/11/02/causes-of-alsa-confusion/comment-page-1/#comment-90 admin Fri, 12 Feb 2010 17:22:19 +0000 http://linuxlive.joshuacorps.org/?p=90#comment-90 You are most welcome :-) You are most welcome :-)

]]> Comment on an xrun (latency) killer: -S with jack2 by adminhttp://linuxlive.ponderworthy.org/2009/12/18/an-xrun-latency-killer-s-with-jack2/comment-page-1/#comment-89 admin Fri, 12 Feb 2010 17:22:06 +0000 http://linuxlive.joshuacorps.org/?p=225#comment-89 Wow. Have you found anything interesting to adjust using this info? And do you use async, or sync? :-) Wow. Have you found anything interesting to adjust using this info? And do you use async, or sync? :-)

]]> Comment on an xrun (latency) killer: -S with jack2 by fitzhughhttp://linuxlive.ponderworthy.org/2009/12/18/an-xrun-latency-killer-s-with-jack2/comment-page-1/#comment-87 fitzhugh Tue, 09 Feb 2010 01:41:27 +0000 http://linuxlive.joshuacorps.org/?p=225#comment-87 I think the following sheds some light on the reason for async/sync modes and, specifically, why async runs slower:http://orford.org/assets/jack.php - near the bottom under framedropping: ...Stephane Letz has implemented this feature [framedropping to avoid booting slow clients when you want elegant degradation more than 100% perfection], ju as part of the alternative Jack implemtation, Jackdmp (jackd-multi-processor). Jackdmp calls this "asynchronous activation mode". It adds an extra 'process-cycle' to allow for failed clients. http://www.grame.fr/Recherche/Publications/list/list.php?lang=fr contains a technical paper with the details. It works by timeslicing each period into multiple parts, and each cpu core is allocated all the nodes for one of the timeslices. I think the following sheds some light on the reason for async/sync modes and, specifically, why async runs slower:

http://orford.org/assets/jack.php – near the bottom under framedropping:
…Stephane Letz has implemented this feature [framedropping to avoid booting slow clients when you want elegant degradation more than 100% perfection], ju as part of the
alternative Jack implemtation, Jackdmp (jackd-multi-processor).
Jackdmp calls this “asynchronous activation mode”.
It adds an extra ‘process-cycle’ to allow for failed clients.
http://www.grame.fr/Recherche/Publications/list/list.php?lang=fr contains
a technical paper with the details. It works by timeslicing each period
into multiple parts, and each cpu core is allocated all the nodes for one
of the timeslices.

]]> Comment on Causes of ALSA Confusion by fitzhughhttp://linuxlive.ponderworthy.org/2009/11/02/causes-of-alsa-confusion/comment-page-1/#comment-86 fitzhugh Mon, 08 Feb 2010 23:08:44 +0000 http://linuxlive.joshuacorps.org/?p=90#comment-86 Thank you for sharing all the lessons you're learning! It makes it much easier for others :) Thank you for sharing all the lessons you’re learning! It makes it much easier for others :)

]]> Comment on an xrun (latency) killer: -S with jack2 by Jonathan E. Brickmanhttp://linuxlive.ponderworthy.org/2009/12/18/an-xrun-latency-killer-s-with-jack2/comment-page-1/#comment-30 Jonathan E. Brickman Mon, 18 Jan 2010 05:34:10 +0000 http://linuxlive.joshuacorps.org/?p=225#comment-30 You are most welcome, Guru :-) And thanks for writing. I will be moving linuxlive to a new server very shortly, but all the pages should stay up. Not sure about URLs though. You are most welcome, Guru :-) And thanks for writing. I will be moving linuxlive to a new server very shortly, but all the pages should stay up. Not sure about URLs though.

]]> Comment on an xrun (latency) killer: -S with jack2 by Guru Prasadhttp://linuxlive.ponderworthy.org/2009/12/18/an-xrun-latency-killer-s-with-jack2/comment-page-1/#comment-29 Guru Prasad Fri, 15 Jan 2010 16:21:58 +0000 http://linuxlive.joshuacorps.org/?p=225#comment-29 Jonathan, I completely concur with your observation. Jack2 is indeed an xrun killer. And the improved stability is also quite noticable on single core systems - I'm seeing stable performance using Linuxsampler on my old Celeron notebook! . Thanks for the heads-up! Cheers, Guru Jonathan, I completely concur with your observation. Jack2 is indeed an xrun killer. And the improved stability is also quite noticable on single core systems – I’m seeing stable performance using Linuxsampler on my old Celeron notebook! . Thanks for the heads-up!
Cheers,
Guru

]]> Comment on ALSA and Jack Cooperate using PulseAudio by Jonathan E. Brickmanhttp://linuxlive.ponderworthy.org/2009/10/29/coexisting-alsa-and-jack-with-pulseaudio/comment-page-1/#comment-14 Jonathan E. Brickman Sat, 12 Dec 2009 16:34:12 +0000 http://linuxlive.joshuacorps.org/?p=57#comment-14 No, the opinions in this post and all the others on this site are not <U>exclusively</U> mine. No, the opinions in this post and all the others on this site are not exclusively mine.

]]> Comment on ALSA and Jack Cooperate using PulseAudio by iro4kahttp://linuxlive.ponderworthy.org/2009/10/29/coexisting-alsa-and-jack-with-pulseaudio/comment-page-1/#comment-13 iro4ka Wed, 09 Dec 2009 23:53:22 +0000 http://linuxlive.joshuacorps.org/?p=57#comment-13 Dear Author linuxlive.joshuacorps.org ! It exclusively your opinion Dear Author linuxlive.joshuacorps.org !
It exclusively your opinion

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