Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!

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To: <linux-audio-user@...>
Date: Wednesday, June 15, 2011 - 8:32 am

Paul Davis wrote:

I can second that one which improved things on my laptop. Sad as it may
be the binary drivers seem to deliver better general system performance
than the nouveau ones.

Another one I experienced (again working with intensive Pd stuff) was to
ensure that all "CPU scaling" stuff was set to maximum performance and
nothing automatic is going on (such as "Ondemand" et sim.) both CPU-wise
*and* graphics card GPU-wise (this can e.g. be controlled in the
nvidia-panel for the proprietary drivers).

All this, of course, after taking care of the 'usual' real-time
settings. This not only on the jack/audio side: e.g. even if jack is
running realtime with bleeding edge low latency your software may not be
playing well rt (I experienced this with Pure Data were an explicit -rt
command line switch is needed to get smooth rt performance).

Anyway good luck :)
Lorenzo.

> i can now run JACK down at -p 64 -n 2 and

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Messages in current thread:
[LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 7:40 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 19, 8:46 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Tue Jun 14, 7:11 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Tue Jun 14, 11:44 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Tue Jun 14, 11:30 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Lorenzo Sutton, (Wed Jun 15, 8:32 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Tue Jun 14, 12:43 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Gerhard Zintel, (Tue Jun 14, 11:14 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Jeremy Jongepier, (Tue Jun 14, 7:28 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Tue Jun 14, 7:36 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Jeremy Jongepier, (Tue Jun 14, 8:00 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Sun Jun 12, 1:47 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Atte André Jensen, (Sun Jun 12, 9:08 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 4:49 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Sun Jun 12, 8:23 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Mon Jun 13, 12:31 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Mon Jun 13, 1:02 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Mon Jun 13, 7:08 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Mon Jun 13, 7:06 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Robin Gareus, (Mon Jun 13, 9:54 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Igor Brkic, (Sun Jun 12, 12:16 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 9:44 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Jeremy Jongepier, (Sun Jun 12, 9:59 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 10:15 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, James Warden, (Sun Jun 12, 10:47 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 12:30 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 5:08 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 6:28 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 12:35 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, rosea.grammostola, (Sun Jun 12, 9:36 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 4:45 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Sun Jun 12, 8:21 pm)