7 Jan
2011
7 Jan
'11
12:24 p.m.
Hi,
I know you can make a script to set the cpu scaling on performance. But
is there also a way to make this permanent on a Debian based distro
(Ubuntu)? What is the best way to do this?
Regards,
\r
7 Jan
7 Jan
1:04 p.m.
Am 07.01.2011 12:23, schrieb rosea.grammostola:
Hi,
I know you can make a script to set the cpu scaling on performance.
But is there also a way to make this permanent on a Debian based
distro (Ubuntu)? What is the best way to do this?
Regards,
\r
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Hi,
on my aptosid (based upon debian sid) I've changed this file to get
"conservative" gov.:
--- /etc/init.d/cpufrequtils.orig 2009-11-21 23:39:25.000000000 +0100
+++ /etc/init.d/cpufrequtils 2010-12-19 16:34:13.000000000 +0100
@@ -40,7 +40,8 @@
# MIN_SPEED=500
ENABLE="true"
-GOVERNOR="ondemand"
+#GOVERNOR="ondemand"
+GOVERNOR="conservative"
MAX_SPEED="0"
MIN_SPEED="0"
Ciao, Martin
1:25 p.m.
On 01/07/2011 01:04 PM, Martin Homuth-Rosemann wrote:
Hi,
on my aptosid (based upon debian sid) I've changed this file to get
"conservative" gov.:
--- /etc/init.d/cpufrequtils.orig 2009-11-21 23:39:25.000000000 +0100
+++ /etc/init.d/cpufrequtils 2010-12-19 16:34:13.000000000 +0100
@@ -40,7 +40,8 @@
# MIN_SPEED=500
ENABLE="true"
-GOVERNOR="ondemand"
+#GOVERNOR="ondemand"
+GOVERNOR="conservative"
MAX_SPEED="0"
MIN_SPEED="0"
Ciao, Martin
On Ubuntu you could change the governor in /etc/init.d/ondemand too if
you don't have cpufrequtils installed.
--- ondemand.orig 2011-01-07 13:23:43.000000000 +0100
+++ ondemand 2011-01-07 13:24:04.000000000 +0100
@@ -24,7 +24,7 @@
for CPUFREQ in
/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
do
[ -f $CPUFREQ ] || continue
- echo -n ondemand > $CPUFREQ
+ echo -n performance > $CPUFREQ
done
;;
restart|reload|force-reload)
Best,
Jeremy
1:27 p.m.
On 01/07/2011 01:25 PM, Jeremy Jongepier wrote:
On 01/07/2011 01:04 PM, Martin Homuth-Rosemann wrote:
Aren't these two files conflicting
with each other?
\r
Hi,
on my aptosid (based upon debian sid) I've changed this file to get
"conservative" gov.:
--- /etc/init.d/cpufrequtils.orig 2009-11-21 23:39:25.000000000 +0100
+++ /etc/init.d/cpufrequtils 2010-12-19 16:34:13.000000000 +0100
@@ -40,7 +40,8 @@
# MIN_SPEED=500
ENABLE="true"
-GOVERNOR="ondemand"
+#GOVERNOR="ondemand"
+GOVERNOR="conservative"
MAX_SPEED="0"
MIN_SPEED="0"
Ciao, Martin
On Ubuntu you could change the governor in /etc/init.d/ondemand too if
you don't have cpufrequtils installed.
1:35 p.m.
On 01/07/2011 01:27 PM, rosea.grammostola wrote:
Aren't these two files conflicting with each
other?
\r
Ondemand is installed by default. So if you don't have cpufrequtils
installed you could patch /etc/init.d/ondemand without having conflicts.
You could also disable this service and make sure that
/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor is set to performance.
Best,
Jeremy
1:41 p.m.
On 01/07/2011 01:35 PM, Jeremy Jongepier wrote:
On 01/07/2011 01:27 PM, rosea.grammostola wrote:
I do have cpufrequtils
installed.
Is it possible to disable ondemand via sysv-rc-conf and edit the file
for cpufrequtils as suggested by Martin?
\r
Aren't these two files conflicting with each
other?
\r
Ondemand is installed by default. So if you don't have cpufrequtils
installed you could patch /etc/init.d/ondemand without having
conflicts. You could also disable this service and make sure that
/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor is set to
performance.
Best,
Jeremy
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8 Jan
8 Jan
3:32 p.m.
are you guys all using laptops or what's the advantage of using
cpu-scaling? never had it installed here.
3:59 p.m.
On 01/08/2011 03:32 PM, Fabio wrote:
are you guys all using laptops or what's the
advantage of using
cpu-scaling? never had it installed here.
Saving [an enormous amount of] battery power. e.g it's handy when doing
field-recordings on a laptop: This Thinkpad X60s w/o CPU freq scaling it
consumes ~30 Watt. Lowering the CPU speed can get it down to 10-12 Watts.
For a desktop machine: it's only a drop in a bucket - but saving energy
is something we should all be concerned about.
Note that CPU scaling does not work reliably on all systems and some
BIOS tweaks may be needed (disable EIST and bus-freq scaling).
For some high-end systems (studios) where the price for power is
negligible compared to revenue lost by an x-runs during recording: don't
use it.
2c,
robin
--
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4:11 p.m.
On 01/08/11 15:59, Robin Gareus wrote:
Saving [an enormous amount of] battery power. e.g
it's handy when doing
field-recordings on a laptop: This Thinkpad X60s w/o CPU freq scaling it
consumes ~30 Watt. Lowering the CPU speed can get it down to 10-12 Watts.
Field recordings on a laptop without having a decent power source are a
very rare situation (where do the preamps get their power from etc.?).
Recordings are a situation where I give a shit on energy consumption, I
want maximum reliability.
Flo
--
Machines can do the work, so people have time to think.
public key B3B9226C x-hkp://wwwkeys.eu.pgp.net
6:29 p.m.
On 01/08/2011 04:11 PM, Florian Faber wrote:
On 01/08/11 15:59, Robin Gareus wrote:
for maximum reliability, i also try to run the machine as cool as
possible. so i test beforehand if i can get away with the cpu pinned at
lowest speed, and then use that when all i do is recording and there's
not much going on in terms of dsp.
Saving [an enormous amount of] battery power. e.g
it's handy when doing
field-recordings on a laptop: This Thinkpad X60s w/o CPU freq scaling it
consumes ~30 Watt. Lowering the CPU speed can get it down to 10-12 Watts.
Field recordings on a laptop without having a decent power source are a
very rare situation (where do the preamps get their power from etc.?).
Recordings are a situation where I give a shit on energy consumption, I
want maximum reliability.
7 Jan
7 Jan
2:11 p.m.
On 01/07/2011 01:35 PM, Jeremy Jongepier wrote:
You could also disable this service and make sure
that
/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor is set to
performance.
...But actually this would be the same as renaming (and relinking in the
different runlevel directories) /etc/init.d/ondemand to
/etc/init.d/performance and changing the governor in that file.
Best,
Jeremy
2:35 p.m.
On Fri, 07 Jan 2011 13:27:41 +0100, rosea.grammostola wrote
On 01/07/2011 01:25 PM, Jeremy Jongepier wrote:
I guess the OP just used two files to provide you with a convenient diff that
you can apply.
No, these two files won't conflict. You can put whatever you want into
/etc/init.d - nothing
will happen. Quiz: what files _do_ get executed? :-)
Cheers, Ralf Mattes
On 01/07/2011 01:04 PM, Martin Homuth-Rosemann
wrote:
Aren't these two files conflicting
with each other? Hi,
on my aptosid (based upon debian sid) I've changed this file to get
"conservative" gov.:
--- /etc/init.d/cpufrequtils.orig 2009-11-21 23:39:25.000000000 +0100
+++ /etc/init.d/cpufrequtils 2010-12-19 16:34:13.000000000 +0100
@@ -40,7 +40,8 @@
# MIN_SPEED=500
ENABLE="true"
-GOVERNOR="ondemand"
+#GOVERNOR="ondemand"
+GOVERNOR="conservative"
MAX_SPEED="0"
MIN_SPEED="0"
Ciao, Martin
On Ubuntu you could change the governor in /etc/init.d/ondemand too if
you don't have cpufrequtils installed.
\r
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
--
R. Mattes -- Systemeinheitsstreichler
Hochschule fuer Musik Freiburg
rm(a)inm.mh-freiburg.de
2:42 p.m.
On 01/07/2011 01:39 PM, R. Mattes wrote:
On Fri, 07 Jan 2011 13:27:41 +0100, rosea.grammostola
wrote
On 01/07/2011 01:25 PM, Jeremy Jongepier wrote:
I guess the OP just used two files to provide you with a convenient diff that
you can apply.
No, these two files won't conflict. You can put whatever you want into
/etc/init.d - nothing
will happen. On 01/07/2011 01:04 PM, Martin Homuth-Rosemann
wrote:
Aren't these two files conflicting
with each other? Hi,
on my aptosid (based upon debian sid) I've changed this file to get
"conservative" gov.:
--- /etc/init.d/cpufrequtils.orig 2009-11-21 23:39:25.000000000 +0100
+++ /etc/init.d/cpufrequtils 2010-12-19 16:34:13.000000000 +0100
@@ -40,7 +40,8 @@
# MIN_SPEED=500
ENABLE="true"
-GOVERNOR="ondemand"
+#GOVERNOR="ondemand"
+GOVERNOR="conservative"
MAX_SPEED="0"
MIN_SPEED="0"
Ciao, Martin
On Ubuntu you could change the governor in /etc/init.d/ondemand too if
you don't have cpufrequtils installed. Quiz: what files _do_ get executed? :-)
Those configured for the runlevel (usually "2" these days) in
/etc/rc?.d/ - read `man 8 init`. `ls -l /etc/rc?.d/`
Instead of creating symlinks in /etc/rc2.d/ manually one usually
configures those with `update-rc.d` (`man update-rc.d`). There's also
some GUI's to configure the system-V init scripts, but I don't know what
they're called these days..
HTH,
robin
2:11 p.m.
On 01/07/2011 12:23 PM, rosea.grammostola wrote:
Hi,
I know you can make a script to set the cpu scaling on performance. But
is there also a way to make this permanent on a Debian based distro
(Ubuntu)? What is the best way to do this?
Not a solution for the short-term, but it will probably get easier in
the not-too-far future.
A few weeks ago I created proof-of-concept: a small daemon that switches
to "performance" when starting an audio session and return to power-save
mode when done:
http://rg42.org/oss/jackfreqd/
Paul Davis and Torben Hohn suggested to integrate that feature directly
into jackd. See discussion on the Jack-devel list "jack frequency
scaling daemon" December 14/15 2010.
ciao,
robin
11 Jan
11 Jan
1:32 p.m.
2011/1/7 Robin Gareus <robin(a)linuxaudio.org>rg>:
A few weeks ago I created proof-of-concept: a small
daemon that switches
to "performance" when starting an audio session and return to power-save
mode when done:
http://rg42.org/oss/jackfreqd/
Paul Davis and Torben Hohn suggested to integrate that feature directly
into jackd. See discussion on the Jack-devel list "jack frequency
scaling daemon" December 14/15 2010.
Wow ...
This would be excelent improvement for laptop users.
You know in which release should be this introduced? I am not
subscribed to jack-devel mailing list.
best regards
mira
1:50 p.m.
On 01/11/2011 01:32 PM, Jaromír Mikeš wrote:
2011/1/7 Robin Gareus <robin(a)linuxaudio.org>rg>:
I suppose jack1 and maybe tschack since Torben Hohn mentioned at some
point that he'll look into it. AFAIK there's not ETA or release target.
A few weeks ago I created proof-of-concept: a
small daemon that switches
to "performance" when starting an audio session and return to power-save
mode when done:
http://rg42.org/oss/jackfreqd/
Paul Davis and Torben Hohn suggested to integrate that feature directly
into jackd. See discussion on the Jack-devel list "jack frequency
scaling daemon" December 14/15 2010.
Wow ...
This would be excelent improvement for laptop users.
You know in which release should be this introduced? I am not
subscribed to jack-devel mailing list.
gmane has a public archive:
http://comments.gmane.org/gmane.comp.audio.jackit/22884
ciao,
robin
--
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web: http://gareus.org/ mail: robin(a)gareus.org
lab: http://citu.fr/ chat: xmpp:rgareus@ik.nu
Public Key at http://pgp.mit.edu/ http://gareus.org/public.asc
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days inactive
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days old
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15 comments
10 participants
participants (10)
-
Fabio -
Florian Faber -
Jaromír Mikeš -
Jeremy Jongepier -
Jörn Nettingsmeier -
Martin Homuth-Rosemann -
R. Mattes -
Robin Gareus -
Robin Gareus -
rosea.grammostola