Power management on g4's
Hi, I'm running opensuse 10.1 on a small cluster of G4's. The cluster is used only for computation, so I've removed monitors, keyboards etc and have the machines sitting on a shelf. Are there additional powersaving measures I can enable? Will linux put the machines into a "sleep" mode in a way similar to OSX if there are no cpu-intensive processes running? (I notice that the cooling fans never seem to spin down and am guessing that everything is running full-bore). Would pulling the graphics cards, disconnecting zip, cdrom drives etc reduce the electrical load substantially? Nathan Moore
On Mon, Jun 12, Nathan Moore wrote:
I'm running opensuse 10.1 on a small cluster of G4's. The cluster is used only for computation, so I've removed monitors, keyboards etc and have the machines sitting on a shelf. Are there additional powersaving measures I can enable? Will linux put the machines into a "sleep" mode in a way similar to OSX if there are no cpu-intensive processes running? (I notice that the cooling fans never seem to spin down and am guessing that everything is running full-bore).
Are you saying the newer G4 desktops have similar cooling like G5? Maybe the kernel driver just doesnt recognize that the system has calmed down. Its better if you ask this kind of question on linuxppc-dev@ozlabs.org
Would pulling the graphics cards, disconnecting zip, cdrom drives etc reduce the electrical load substantially?
It is possible that the graphics cards run at full speed due to lack of info how to throttle them, but I do not know for sure. The IDE drives can be shut down via hdparm -S 255 /dev/hda after the specified amount of time.
Are you saying the newer G4 desktops have similar cooling like G5? Maybe the kernel driver just doesnt recognize that the system has calmed down. Its better if you ask this kind of question on
I don't really think that it has much more power management than
turning the drives off and the monitor off and things like that. I
THINK that the basic G4s have some type of thermal management, but
nothing like the G5s. He has 533 and 700s(My last reply I forgot to
send to the list). I can run my G4 chip w/o a fan, but it's a whole
lot cooler with it.
On another note, I finally got a Rage 128/16MB card. And, I am still
having issues with YaST. I will try a step by step install and see
what happens.
Lastly, I have a friend with an iBook G4 1.2Ghz. He told me that the
system will boot off his SuSE install CDs(he also tried Gentoo with the
same problem) and he gets the yaboot prompt, but he can't do anything.
The keyboard will show the numlock and caps lock turning on and off,
but he can't do anything to start the installer. Any suggestions?
-----Original Message-----
From: Olaf Hering
It is possible that the graphics cards run at full speed due to lack of info how to throttle them, but I do not know for sure. The IDE drives can be shut down via hdparm -S 255 /dev/hda after the specified amount of time.
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On Tue, Jun 13, Olaf Hering wrote:
On Mon, Jun 12, Nathan Moore wrote:
I'm running opensuse 10.1 on a small cluster of G4's. The cluster is used only for computation, so I've removed monitors, keyboards etc and have the machines sitting on a shelf. Are there additional powersaving measures I can enable? Will linux put the machines into a "sleep" mode in a way similar to OSX if there are no cpu-intensive processes running? (I notice that the cooling fans never seem to spin down and am guessing that everything is running full-bore).
Are you saying the newer G4 desktops have similar cooling like G5? Maybe the kernel driver just doesnt recognize that the system has calmed down. Its better if you ask this kind of question on linuxppc-dev@ozlabs.org
Can you paste the output of /proc/cpuinfo? Need to know the 'PowerMacX,Y' value of your box.
participants (3)
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larrystotler＠netscape.net -
Nathan Moore -
Olaf Hering