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

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To: <linux-audio-user@...>
Date: Sunday, June 12, 2011 - 5:08 pm

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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.

Best,
AKJ

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 1000 MHz - 1.67 GHz
available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz
available cpufreq governors: performance
current policy: frequency should be within 1000 MHz and 1.67 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 1.67 GHz.
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 10.0 us.
hardware limits: 1000 MHz - 1.67 GHz
available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz
available cpufreq governors: performance
current policy: frequency should be within 1000 MHz and 1.67 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 1.67 GHz.

On Sun, Jun 12, 2011 at 7:29 AM, Ralf Mardorf wrote:

> On Sun, 2011-06-12 at 03:46 -0700, James Warden wrote:

--
Aaron Krister Johnson
http://www.akjmusic.com
http://www.untwelve.org

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Content-Transfer-Encoding: quoted-printable

FYI, according to cpufreq-info, I'm only configured for the "perfo=
rmance" governor.....so I think the issue goes back to the jack versio=
n I was using. For whatever reason, I need to stay away from 0.118 and 0.12=
0 and move to jack2-svn (which is a moving target, but for now, it's fi=
ne). After installing jack2-svn on Arch this morning, 'jackd -V' sa=
ys that it's 'jackdmp 1.9.7', so that's what's working =
for me much better at the moment.
Best,AKJcpufrequtils=
008: cpufreq-info (C) Dominik Brodowski 2004-2009Report errors =
and bugs to cpufreq@vger.kernel.=
org
, please.
analyzing CPU 0:=C2=A0 driver: acpi-cpufreq=C2=
=A0 CPUs which run at the same hardware frequency: 0=C2=A0 CPUs =
which need to have their frequency coordinated by software: 0=C2=
=A0 maximum transition latency: 10.0 us.
=C2=A0 hardware limits: 1000 MHz - 1.67 GHz=C2=A0 available=
frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz=C2=A0 available c=
pufreq governors: performance=C2=A0 current policy: frequency sh=
ould be within 1000 MHz and 1.67 GHz.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 The gov=
ernor "performance" may decide which speed to use=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 within this ran=
ge.=C2=A0 current CPU frequency is 1.67 GHz.analyzing=
CPU 1:
=C2=A0 driver: acpi-cpufreq=C2=A0 CPUs which run at the same har=
dware frequency: 1=C2=A0 CPUs which need to have their frequency=
coordinated by software: 1=C2=A0 maximum transition latency: 10=
.0 us.
=C2=A0 hardware limits: 1000 MHz - 1.67 GHz=C2=A0 available freq=
uency steps: 1.67 GHz, 1.33 GHz, 1000 MHz=C2=A0 available cpufre=
q governors: performance=C2=A0 current policy: frequency should =
be within 1000 MHz and 1.67 GHz.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 The gov=
ernor "performance" may decide which speed to use=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 within this ran=
ge.=C2=A0 current CPU frequency is 1.67 GHz.
On Sun, Jun 12, 2011 at 7:29 AM, Ralf Mardorf <ralf.mardorf@alice-dsl.net> wrote:
On Sun, 2011-06-12 at 03:46 -0700, James =
Warden wrote:

x-audio-user@lists.linuxaudio.org
quot; ] ; then
-max $MAX_SPEED"
quot; ] ; then
-min $MIN_SPEED"
-governor $GOVERNOR"
lt, 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 ca=
lling such config scheme "idiocy". I don't want to be too har=
d in my critics but you seem to be a little too noisy too fast. Make sure y=
ou RTFM before posting such judgemental comments on distros.

>

But I wish to have the opportunity to chose the frequency scali=
ng e.g.
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.
This script and the behaviour it cause is for a default Debian install
and IMO this is idiocy. A default can be set by the kernel
configuration, what's bad with this? The most often cause for xruns for=

the last month I read about, was a bad CPU frequency scaling.

I'm curios about the cause of "Jack vs. Alsa, PianoTeq demo: Alsa<=
br>
wins!".

I experienced that as soon as jackd is involved, even if a media player
was ok with ALSA, I got xruns causing audible glitches, already without
CPU load, while there were never xruns or audible glitches as soon as
the CPU frequency scaling is set to performance, even for heavy resource
hungry audio productions. There might be two xruns when I start a
session, but no additional for the next 48 hours.

Regards,

Ralf

_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@l=
ists.linuxaudio.org

http://lists.linuxaudio.org/listinfo/linux-audio-user
-- Aaron Krist=
er Johnsonhttp://=
www.akjmusic.com
http://www.untwelve.org

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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)