Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Paul Johnson ba...@ursamundi.org writes: On Sat, 2009-09-19 at 10:45 +0200, Merciadri Luca wrote: However, the whole problem is that it does *not* automatically adjust the CPU freq, according to its load. cpufreqd installed? Thanks, Paul: I had to install cpufreqd. It now works as desired. (Sorry for my late answer.) - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkrurnwACgkQM0LLzLt8MhxrtwCdEhVNQ9eZNfEobDDnyKgzSK0d sGYAnRJYduQSqP5sJytZlEO6Rq9L3qw3 =vTkJ -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tixy debianu...@tixy.myzen.co.uk writes: On Sat, 2009-09-19 at 10:45 +0200, Merciadri Luca wrote: However, the whole problem is that it does *not* automatically adjust the CPU freq, according to its load. When doing some video transcoding a while ago, on a Lenny install, I noticed that it was using 100% CPU time with the CPU running at only 1/3rd of its maximum frequency - this was with it set to 'on demand'. Changing the process 'niceness' to less than zero made the CPU crank up to full speed and the video transcoding doubled in speed. So its possible that 'on demand' also means 'but only if you're not too nice' :-) I can feel the difference too, now that I use it conjointly with cpufreqd. Thanks. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkrurpcACgkQM0LLzLt8MhzaDACfSgP6k/b1TgSBaIhg/2+L6YVn iIoAni/AfF42wHk5Tpp30dFwUSgrXzx8 =2UML -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Paul Johnson ba...@ursamundi.org writes: On Fri, 2009-09-18 at 12:10 +0200, Merciadri Luca wrote: I am using GNOME with Debian Lenny, with a 2.6.26-2-686 kernel. I have added to one of my panels the GNOME's default CPU scaling applet. It allows me to modify CPUs' frequency (not independently, as I have 4 CPUs on the same machine) easily. What's the default applet? I'm not familiar, I chose the laptop task and didn't get it. I do not know the name of the default applet, but it is a built-in in GNOME. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkrurh0ACgkQM0LLzLt8Mhw+fgCfdgjG8Cm89fXUpt4z0xkMb31r LNsAn2Xi9v367OW+8OtBhVi4yEPnjX+7 =Y66l -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
On Sat, 2009-09-19 at 10:45 +0200, Merciadri Luca wrote: However, the whole problem is that it does *not* automatically adjust the CPU freq, according to its load. cpufreqd installed? signature.asc Description: This is a digitally signed message part
Re: CPU default frequency is at 75%
On Fri, 2009-09-18 at 12:10 +0200, Merciadri Luca wrote: I am using GNOME with Debian Lenny, with a 2.6.26-2-686 kernel. I have added to one of my panels the GNOME's default CPU scaling applet. It allows me to modify CPUs' frequency (not independently, as I have 4 CPUs on the same machine) easily. What's the default applet? I'm not familiar, I chose the laptop task and didn't get it. signature.asc Description: This is a digitally signed message part
Re: CPU default frequency is at 75%
On Fri, 2009-09-18 at 13:48 +0200, Merciadri Luca wrote: Aioanei Rares debian.dev.l...@gmail.com writes: Try kpowersave. It works with kpowersave (I just tried), but it would show the supremacy of KDE versus GNOME... Just because they do one thing right doesn't mean that it's overall right. Eventually even Microsoft realizes this and starts playing catchup with Windows. signature.asc Description: This is a digitally signed message part
Re: CPU default frequency is at 75%
Ondemand, the same as what appears in the applet, after boot. However, despite Ondemand, even a huge CPU load does not make Debian asking for more CPU resources, such as 100%. Notice that ondemand and such are completely implemented inside the kernel. So all the relevant parameters are in /sys/devices/system/cpu/cpu0/cpufreq/. As I explained before, there is no modification about CPU frequency, even with a maximum load. That's odd. Unless your load is niced, in which case it's not considered as speed critical and will not cause the CPU frequency to be increased. I suggest you use just the ondemand governor and stop caring about the issue at all. You will get full CPU power when you need it and save a little power when you don't. My aim is not to save power. I am running many scientific-purpose applications, and they need full CPU power. As I often switch between many OSes, manually modifying manually governor is tedious. I installed kpowersave, and it works, but I am pretty deceived that it does not work with GNOME's utils. There are lots of different scripts/programs/packages that can control your CPU's frequency. If you set your system's frequency via the cpufrequtils package, then just create or edit the file /etc/default/cpufrequtils and put: GOVERNOR=performance in it. I personally put MIN_SPEED=2.2GHz in mine instead, because I want to save energy but my system seems to have a problem which makes it crash occasionally (more specifically I see memory corruption) for any CPU frequency lower than 2.2GHz. A question that comes to my mind: how do you measure the current clock frequency? Only by looking at the Gnome applet? On one hand, by looking at the GNOME applet. On the other hand, by hearing fans, which are really noisy when I use Performance rather than Ondemand. Obviously, you disagree, but personally I'd prefer my long-running calculations to take up 33% more time (by running at only 75%), if that saved me from suffering through noisy fans. Unless of course the machine is far away and you can't hear it. ;-) Stefan -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Jochen Schulz m...@well-adjusted.de writes: Merciadri Luca: Jochen Schulz m...@well-adjusted.de writes: What does # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor say after bootup? Ondemand, the same as what appears in the applet, after boot. However, despite Ondemand, even a huge CPU load does not make Debian asking for more CPU resources, such as 100%. Then have a look at /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq It should contain the highest frequency your processor supports. It is the case. That would be the kernel's default behaviour if your current governor is either ondemand or conservative. How could I modify it? Modify what? -Most probably, cpufrequtils will contain all the tools you need. It allows you to select a governor and set min/max frequency limits, for cases where they are mis-reported by default. I suggest you use just the ondemand governor and stop caring about the issue at all. You will get full CPU power when you need it and save a little power when you don't. My aim is not to save power. I am running many scientific-purpose applications, and they need full CPU power. Sure, no problem. The ondemand governor is all about saving power without sacrificing performance. If nothing's wrong with your configuration, this is exactly what you should get by default. Something must be wrong, as CPU freq. is never modified, even with there is a huge load. A question that comes to my mind: how do you measure the current clock frequency? Only by looking at the Gnome applet? On one hand, by looking at the GNOME applet. On the other hand, by hearing fans, which are really noisy when I use Performance rather than Ondemand. I would take a look into /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq, just to be sure. It exactly gives the same values as GNOME's applet does. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkq0md0ACgkQM0LLzLt8MhwehwCfRK3zOCWHkMIuglzWholiZNcb FKoAoJvlVEFEG/6WwIAvMU5DJlcvE6WN =vONc -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Steve Lamb g...@dmiyu.org writes: Stefan Monnier wrote: Nowadays, power management is important for all machines nowadays, and Not to the point where it overrides user preference or causes problems with the machine. I've got one machine where every time the power manager decided to adjust my CPU speed the entire machine froze for 2-3 seconds until the power manager got the word my CPU doesn't scale. So 15s later it tried again. Having your machine freeze every 15s for 2-3s is not usable. The lengths I went to to rip out power management was excessive. There aught to be a simple Shut up, Mr. Scott and give me all she's got! button, period. -- Steve C. Lamb | But who decides what they dream? PGP Key: 8B6E99C5 | And dream I do... ---+- Agree (but it is not my case). - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkq0mlcACgkQM0LLzLt8MhwG9gCfT/8r3KmpO7bVWskHtXHka9fY htEAoJKl6EaDHD34y6CxT3HKQ9jRmytS =s6jP -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Stefan Monnier monn...@iro.umontreal.ca writes: How could I manage to make the process of using Performance automatically? Most likely the setting you currently have is one which automatically adjusts the frequency based on the amount of work there is for the CPU: if it's busy, the frequency will climb to 100%. The computer I am speaking about is not a laptop, and there is no reason to choose a different setting than Performance, except for power issues, but that is not a problem. Nowadays, power management is important for all machines nowadays, and the experience gained with laptops taught us how to save energy wihout impacting the performance. Also reducing the frequency when the load is sufficiently low will not only reduce your electricity bill, but also the temperature of your CPU and the speed at which the fans spin. However, the whole problem is that it does *not* automatically adjust the CPU freq, according to its load. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkq0mh4ACgkQM0LLzLt8MhxPPgCfbMKPVdCjF2Kj4T/r57qT1aYK td0An2dJrk+kcQOPFKZAD+bFdZN32C9I =Hb7k -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
On Sat, 2009-09-19 at 10:45 +0200, Merciadri Luca wrote: However, the whole problem is that it does *not* automatically adjust the CPU freq, according to its load. When doing some video transcoding a while ago, on a Lenny install, I noticed that it was using 100% CPU time with the CPU running at only 1/3rd of its maximum frequency - this was with it set to 'on demand'. Changing the process 'niceness' to less than zero made the CPU crank up to full speed and the video transcoding doubled in speed. So its possible that 'on demand' also means 'but only if you're not too nice' :-) -- Tixy -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
Tixy: On Sat, 2009-09-19 at 10:45 +0200, Merciadri Luca wrote: However, the whole problem is that it does *not* automatically adjust the CPU freq, according to its load. When doing some video transcoding a while ago, on a Lenny install, I noticed that it was using 100% CPU time with the CPU running at only 1/3rd of its maximum frequency - this was with it set to 'on demand'. That's a good hint: ondemand con be configured to ignore niced processes. You can get/set the current setting from /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load J. -- I enjoy shopping, eating, sex and doing jigsaw puzzles of idealised landscapes. [Agree] [Disagree] http://www.slowlydownward.com/NODATA/data_enter2.html signature.asc Description: Digital signature
CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello, I am using GNOME with Debian Lenny, with a 2.6.26-2-686 kernel. I have added to one of my panels the GNOME's default CPU scaling applet. It allows me to modify CPUs' frequency (not independently, as I have 4 CPUs on the same machine) easily. However, when booting Debian, it is put at 75%, and keeps using this value until I change it (by clicking on the applet, and choosing Performance or 2.66Ghz, or 100%). I thought it would not have had any repercussions not to change this value (I thought it had no effect), but it *really* works. As I often use apps which need the *full* cpu power, I would like to use it, directly from the boot, at 100%. How could I manage to make the process of using Performance automatically? The computer I am speaking about is not a laptop, and there is no reason to choose a different setting than Performance, except for power issues, but that is not a problem. Thanks. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzXI4ACgkQM0LLzLt8MhyFmACdHLa57JCKSy/b7dGy/V2U4i5V P08An1pIePyi5VnHRX4xzD+PW6yM7cvH =azfB -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
Merciadri Luca wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello, I am using GNOME with Debian Lenny, with a 2.6.26-2-686 kernel. I have added to one of my panels the GNOME's default CPU scaling applet. It allows me to modify CPUs' frequency (not independently, as I have 4 CPUs on the same machine) easily. However, when booting Debian, it is put at 75%, and keeps using this value until I change it (by clicking on the applet, and choosing Performance or 2.66Ghz, or 100%). I thought it would not have had any repercussions not to change this value (I thought it had no effect), but it *really* works. As I often use apps which need the *full* cpu power, I would like to use it, directly from the boot, at 100%. How could I manage to make the process of using Performance automatically? The computer I am speaking about is not a laptop, and there is no reason to choose a different setting than Performance, except for power issues, but that is not a problem. Thanks. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzXI4ACgkQM0LLzLt8MhyFmACdHLa57JCKSy/b7dGy/V2U4i5V P08An1pIePyi5VnHRX4xzD+PW6yM7cvH =azfB -END PGP SIGNATURE- Try kpowersave. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Aioanei Rares debian.dev.l...@gmail.com writes: Try kpowersave. It works with kpowersave (I just tried), but it would show the supremacy of KDE versus GNOME... - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzc3AACgkQM0LLzLt8Mhz0bgCdEy9xUhiI/ZEb7GDmt6S+PRKD zrUAn1dykriGn6sMvk4FlTPwJZqgyhV9 =lIkq -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
Merciadri Luca wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Aioanei Rares debian.dev.l...@gmail.com writes: Try kpowersave. It works with kpowersave (I just tried), but it would show the supremacy of KDE versus GNOME... - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzc3AACgkQM0LLzLt8Mhz0bgCdEy9xUhiI/ZEb7GDmt6S+PRKD zrUAn1dykriGn6sMvk4FlTPwJZqgyhV9 =lIkq -END PGP SIGNATURE- Let's not go there, please -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I do not want to go there, as GNOME suits my needs better than KDE. However, I deeply think that one must use an interface from the beginning to the end. It is nonsense to use parts of an interface and parts of another. Sometimes, installing KDE packages forces you to install the whole KDE. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzenIACgkQM0LLzLt8MhzwIACfZc5KCZay+ehAVCkT1Kwk9lLJ iiQAoJ0PAIwJ0MlZkBJIz3z4z0Bqlab3 =shJ8 -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
Merciadri Luca wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I do not want to go there, as GNOME suits my needs better than KDE. However, I deeply think that one must use an interface from the beginning to the end. It is nonsense to use parts of an interface and parts of another. Sometimes, installing KDE packages forces you to install the whole KDE. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzenIACgkQM0LLzLt8MhzwIACfZc5KCZay+ehAVCkT1Kwk9lLJ iiQAoJ0PAIwJ0MlZkBJIz3z4z0Bqlab3 =shJ8 -END PGP SIGNATURE- Then write upstream or try coding it yourself -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
Merciadri Luca: However, when booting Debian, it is put at 75%, and keeps using this value until I change it (by clicking on the applet, and choosing Performance or 2.66Ghz, or 100%). What does # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor say after bootup? I thought it would not have had any repercussions not to change this value (I thought it had no effect), but it *really* works. As I often use apps which need the *full* cpu power, I would like to use it, directly from the boot, at 100%. Have you observed whether the frequency changes automatically when the CPU is under load? That would be the kernel's default behaviour if your current governor is either ondemand or conservative. That said, I don't know which governor is used by default by Debian's kernels. How could I manage to make the process of using Performance automatically? The computer I am speaking about is not a laptop, and there is no reason to choose a different setting than Performance, except for power issues, but that is not a problem. I suggest you use just the ondemand governor and stop caring about the issue at all. You will get full CPU power when you need it and save a little power when you don't. Just install cpufrequtils and folle the instructions in README.Debian. J. -- I lust after strangers but only date people from the office. [Agree] [Disagree] http://www.slowlydownward.com/NODATA/data_enter2.html signature.asc Description: Digital signature
Re: CPU default frequency is at 75%
Jochen Schulz wrote: Merciadri Luca: However, when booting Debian, it is put at 75%, and keeps using this value until I change it (by clicking on the applet, and choosing Performance or 2.66Ghz, or 100%). What does # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor say after bootup? I thought it would not have had any repercussions not to change this value (I thought it had no effect), but it *really* works. As I often use apps which need the *full* cpu power, I would like to use it, directly from the boot, at 100%. Have you observed whether the frequency changes automatically when the CPU is under load? That would be the kernel's default behaviour if your current governor is either ondemand or conservative. That said, I don't know which governor is used by default by Debian's kernels. ondemand. How could I manage to make the process of using Performance automatically? The computer I am speaking about is not a laptop, and there is no reason to choose a different setting than Performance, except for power issues, but that is not a problem. I suggest you use just the ondemand governor and stop caring about the issue at all. You will get full CPU power when you need it and save a little power when you don't. Just install cpufrequtils and folle the instructions in README.Debian. J. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Jochen Schulz m...@well-adjusted.de writes: What does # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor say after bootup? Ondemand, the same as what appears in the applet, after boot. However, despite Ondemand, even a huge CPU load does not make Debian asking for more CPU resources, such as 100%. Have you observed whether the frequency changes automatically when the CPU is under load? As I explained before, there is no modification about CPU frequency, even with a maximum load. That would be the kernel's default behaviour if your current governor is either ondemand or conservative. How could I modify it? That said, I don't know which governor is used by default by Debian's kernels. Ondemand, okay, but how to modify this? I suggest you use just the ondemand governor and stop caring about the issue at all. You will get full CPU power when you need it and save a little power when you don't. My aim is not to save power. I am running many scientific-purpose applications, and they need full CPU power. As I often switch between many OSes, manually modifying manually governor is tedious. I installed kpowersave, and it works, but I am pretty deceived that it does not work with GNOME's utils. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzhnIACgkQM0LLzLt8MhzB8wCffq7UeEMMu8TVPrjEuZXPvfAQ MFYAn0N6Nfv4/A6rCXNfCzIIE0y8X/tx =Vci5 -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Aioanei Rares debian.dev.l...@gmail.com writes: Then write upstream or try coding it yourself Mmh, I think you did not understand me... No matter. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iEYEARECAAYFAkqzhWwACgkQM0LLzLt8MhyCPQCfZ2NT3WCkiZR4Y+uNXDYHylUA WfQAoJo9At4hM9rWW1i/G+I2gvCFZ1ZN =AAZ1 -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
How could I manage to make the process of using Performance automatically? Most likely the setting you currently have is one which automatically adjusts the frequency based on the amount of work there is for the CPU: if it's busy, the frequency will climb to 100%. The computer I am speaking about is not a laptop, and there is no reason to choose a different setting than Performance, except for power issues, but that is not a problem. Nowadays, power management is important for all machines nowadays, and the experience gained with laptops taught us how to save energy wihout impacting the performance. Also reducing the frequency when the load is sufficiently low will not only reduce your electricity bill, but also the temperature of your CPU and the speed at which the fans spin. Stefan -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Re: CPU default frequency is at 75%
Stefan Monnier wrote: Nowadays, power management is important for all machines nowadays, and Not to the point where it overrides user preference or causes problems with the machine. I've got one machine where every time the power manager decided to adjust my CPU speed the entire machine froze for 2-3 seconds until the power manager got the word my CPU doesn't scale. So 15s later it tried again. Having your machine freeze every 15s for 2-3s is not usable. The lengths I went to to rip out power management was excessive. There aught to be a simple Shut up, Mr. Scott and give me all she's got! button, period. -- Steve C. Lamb | But who decides what they dream? PGP Key: 8B6E99C5 | And dream I do... ---+- signature.asc Description: OpenPGP digital signature
Re: CPU default frequency is at 75%
Merciadri Luca: Jochen Schulz m...@well-adjusted.de writes: What does # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor say after bootup? Ondemand, the same as what appears in the applet, after boot. However, despite Ondemand, even a huge CPU load does not make Debian asking for more CPU resources, such as 100%. Then have a look at /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq It should contain the highest frequency your processor supports. If not, then something strange is happening. That would be the kernel's default behaviour if your current governor is either ondemand or conservative. How could I modify it? Modify what? -Most probably, cpufrequtils will contain alle the tools you need. It allows you to select a governor and set min/max frequency limits, for cases where they are mis-reported by default. I suggest you use just the ondemand governor and stop caring about the issue at all. You will get full CPU power when you need it and save a little power when you don't. My aim is not to save power. I am running many scientific-purpose applications, and they need full CPU power. Sure, no problem. The ondemand governor is all about saving power without sacrificing performance. If nothing's wrong with your configuration, this is exactly what you should get by default. A question that comes to my mind: how do you measure the current clock frequency? Only by looking at the Gnome applet? I would take a look into /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq, just to be sure. J. -- I want to look younger than my friends so I will fight ageing as long as I can. [Agree] [Disagree] http://www.slowlydownward.com/NODATA/data_enter2.html signature.asc Description: Digital signature
