FYI, according to cpufreq-info, I'm only configured for the "performance" governor.....so I think the issue goes back to the jack version I was using. For whatever reason, I need to stay away from 0.118 and 0.120 and move to jack2-svn (which is a moving target, but for now, it's fine). After installing jack2-svn on Arch this morning, 'jackd -V' says that it's 'jackdmp 1.9.7', so that's what's working for me much better at the moment.<div>
<br></div><div>Best,</div><div>AKJ<br><div><br></div><div><div>cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009</div><div>Report errors and bugs to <a href="mailto:cpufreq@vger.kernel.org">cpufreq@vger.kernel.org</a>, please.</div>
<div>analyzing CPU 0:</div><div> driver: acpi-cpufreq</div><div> CPUs which run at the same hardware frequency: 0</div><div> CPUs which need to have their frequency coordinated by software: 0</div><div> maximum transition latency: 10.0 us.</div>
<div> hardware limits: 1000 MHz - 1.67 GHz</div><div> available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz</div><div> available cpufreq governors: performance</div><div> current policy: frequency should be within 1000 MHz and 1.67 GHz.</div>
<div> The governor "performance" may decide which speed to use</div><div> within this range.</div><div> current CPU frequency is 1.67 GHz.</div><div>analyzing CPU 1:</div><div>
driver: acpi-cpufreq</div><div> CPUs which run at the same hardware frequency: 1</div><div> CPUs which need to have their frequency coordinated by software: 1</div><div> maximum transition latency: 10.0 us.</div><div>
hardware limits: 1000 MHz - 1.67 GHz</div><div> available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz</div><div> available cpufreq governors: performance</div><div> current policy: frequency should be within 1000 MHz and 1.67 GHz.</div>
<div> The governor "performance" may decide which speed to use</div><div> within this range.</div><div> current CPU frequency is 1.67 GHz.</div><div><br></div><div class="gmail_quote">
On Sun, Jun 12, 2011 at 7:29 AM, Ralf Mardorf <span dir="ltr"><<a href="mailto:ralf.mardorf@alice-dsl.net">ralf.mardorf@alice-dsl.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div></div><div class="h5">On Sun, 2011-06-12 at 03:46 -0700, James Warden wrote:<br>
><br>
> --- On Sun, 6/12/11, Ralf Mardorf <<a href="mailto:ralf.mardorf@alice-dsl.net">ralf.mardorf@alice-dsl.net</a>> wrote:<br>
><br>
> > From: Ralf Mardorf <<a href="mailto:ralf.mardorf@alice-dsl.net">ralf.mardorf@alice-dsl.net</a>><br>
> > Subject: Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!<br>
> > To: <a href="mailto:linux-audio-user@lists.linuxaudio.org">linux-audio-user@lists.linuxaudio.org</a><br>
> > Date: Sunday, June 12, 2011, 6:15 AM<br>
> > On Sun, 2011-06-12 at 11:59 +0200,<br>
> > Jeremy Jongepier wrote:<br>
> > > On 06/12/2011 11:44 AM, Ralf Mardorf wrote:<br>
> > > > What CPU frequency scaling? Is it set to<br>
> > performance? There's a new<br>
> > > > nuisance for GNOME desktops on Ubuntu and Debian,<br>
> > they ignore the<br>
> > > > kernel's default CPU frequency scaling, they<br>
> > switch from 'performance'<br>
> > > > to 'ondemand' for GNOME sessions.<br>
> > ><br>
> > > apt-file search ondemand | grep init.d<br>
> > > initscripts: /etc/init.d/ondemand<br>
> > ><br>
> > > So at least on Ubuntu the ondemand init script is part<br>
> > of the<br>
> > > initscripts package and has nothing to do with Gnome.<br>
> > ><br>
> > > Best,<br>
> > ><br>
> > > Jeremy<br>
> ><br>
> ><br>
> > Thank you :)<br>
> ><br>
> > On Debian it's<br>
> ><br>
> > $ cat /etc/init.d/cpufrequtils<br>
> > #!/bin/sh<br>
> > [snip]<br>
> > GOVERNOR="ondemand"<br>
> > [snip]<br>
> ><br>
><br>
><br>
> from the same script of debian:<br>
><br>
> <snip><br>
> if [ -f /etc/default/cpufrequtils ] ; then<br>
> . /etc/default/cpufrequtils<br>
> fi<br>
><br>
> # if not enabled then exit gracefully<br>
> [ "$ENABLE" = "true" ] || exit 0<br>
><br>
> if [ -n "$MAX_SPEED" ] && [ $MAX_SPEED != "0" ] ; then<br>
> CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --max $MAX_SPEED"<br>
> fi<br>
><br>
> if [ -n "$MIN_SPEED" ] && [ $MIN_SPEED != "0" ] ; then<br>
> CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --min $MIN_SPEED"<br>
> fi<br>
><br>
> if [ -n "$GOVERNOR" ] ; then<br>
> CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --governor $GOVERNOR"<br>
> fi<br>
> </snip><br>
><br>
> The debian way is to have a default config in the directory /etc/default, which cpufrequtils is sourcing if it exists (see script snippet above). So either you make one if you don't have one or get informed before calling such config scheme "idiocy". I don't want to be too hard in my critics but you seem to be a little too noisy too fast. Make sure you RTFM before posting such judgemental comments on distros.<br>
><br>
> J.<br>
<br>
</div></div>But I wish to have the opportunity to chose the frequency scaling e.g.<br>
by the GNOME panel, just the default should be the kernel's default. I<br>
don't understand what the script is good for. IMO it only cause pain.<br>
This script and the behaviour it cause is for a default Debian install<br>
and IMO this is idiocy. A default can be set by the kernel<br>
configuration, what's bad with this? The most often cause for xruns for<br>
the last month I read about, was a bad CPU frequency scaling.<br>
<br>
I'm curios about the cause of "Jack vs. Alsa, PianoTeq demo: Alsa<br>
wins!".<br>
<br>
I experienced that as soon as jackd is involved, even if a media player<br>
was ok with ALSA, I got xruns causing audible glitches, already without<br>
CPU load, while there were never xruns or audible glitches as soon as<br>
the CPU frequency scaling is set to performance, even for heavy resource<br>
hungry audio productions. There might be two xruns when I start a<br>
session, but no additional for the next 48 hours.<br>
<div><div></div><div class="h5"><br>
Regards,<br>
<br>
Ralf<br>
<br>
_______________________________________________<br>
Linux-audio-user mailing list<br>
<a href="mailto:Linux-audio-user@lists.linuxaudio.org">Linux-audio-user@lists.linuxaudio.org</a><br>
<a href="http://lists.linuxaudio.org/listinfo/linux-audio-user" target="_blank">http://lists.linuxaudio.org/listinfo/linux-audio-user</a><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Aaron Krister Johnson<br><a href="http://www.akjmusic.com" target="_blank">http://www.akjmusic.com</a><br><a href="http://www.untwelve.org" target="_blank">http://www.untwelve.org</a><br>
<br>
</div></div>