Re: AMD power reduction

2010-02-08 Thread Jean-Francois
Le lundi 08 fivrier 2010 04:10:22, Nick Holland a icrit : With all this talk about power reduction...I'm going to toss out one small suggestion: Get a Wattmeter, and measure... Don't waste your time speculating. Hello, I did. It's consuming some 90 Watts at idle. Actually, it's an Athlon

Re: AMD power reduction

2010-02-08 Thread Schöberle Dániel
From: Jean-Francois [mailto:jfsimon1...@gmail.com] Le lundi 08 fivrier 2010 04:10:22, Nick Holland a icrit : With all this talk about power reduction...I'm going to toss out one small suggestion: Get a Wattmeter, and measure... Don't waste your time speculating. Hello, I did. It's

Re: AMD power reduction

2010-02-08 Thread Jean-Francois
Le lundi 08 fivrier 2010 10:41:18, Daniel Gracia Garallar a icrit : If absolute raw power is not mandatory, you may have a look at Atom-based servers -like http://www.supermicro.es/?opcion=contenidoplt=notasid=137 for example-. This servers consumption should make a difference when working on

Re: AMD power reduction

2010-02-08 Thread Stuart Henderson
Le lundi 08 fivrier 2010 10:41:18, Daniel Gracia Garallar a icrit : If absolute raw power is not mandatory, you may have a look at Atom-based servers -like http://www.supermicro.es/?opcion=contenidoplt=notasid=137 for example-. those work ok (i386/amd64 kernels). you must use a 2.5 drive if

Re: AMD power reduction

2010-02-08 Thread Daniel Gracia Garallar
If absolute raw power is not mandatory, you may have a look at Atom-based servers -like http://www.supermicro.es/?opcion=contenidoplt=notasid=137 for example-. This servers consumption should make a difference when working on renovable energy sources. Regards! Jean-Francois escribis: Le

Re: AMD power reduction

2010-02-07 Thread Jean-Francois
Le vendredi 05 fivrier 2010 17:51:05, Calomel Org a icrit : You can use apm. It will only save a few watts, but it may reduce the cooling costs by reducing the heat generated by the CPU. If you have _many_ machines you can easily reduce the temperature of the server room by a few degrees C.

Re: AMD power reduction

2010-02-07 Thread Robert
On Sun, 7 Feb 2010 18:44:13 +0100 Jean-Francois jfsimon1...@gmail.com wrote: Is there something one can do to make the system fall into sleep in OpenBSD ? Suspending has worked for some time on OpenBSD. Have a look at: zzz But you might want to do your homework about the wakeing up part.

Re: AMD power reduction

2010-02-07 Thread frantisek holop
hmm, on Sun, Feb 07, 2010 at 07:10:29PM +0100, Robert said that On Sun, 7 Feb 2010 18:44:13 +0100 Jean-Francois jfsimon1...@gmail.com wrote: Is there something one can do to make the system fall into sleep in OpenBSD ? Suspending has worked for some time on OpenBSD. Have a look at: zzz

Re: AMD power reduction

2010-02-07 Thread Jean-Francois
As far as I can see, any modern processor supports several states C0, C1, ... Is there any way to take advantage of this into OpenBSD in order to reduce the system consumption by falling the CPU in C1 state or higher ? Regards

Re: AMD power reduction

2010-02-07 Thread Schöberle Dániel
snip Note: When running with the lowest multiplier, HDD I/O performance may suffer. In my case the lowest CPU rate is at 1000MHz and with full I/O load accross 1 or 2 HDDs the CPU load is below the treshold of the apm -C, so it doesn't speed up. If I switch it manually with apm -H the

Re: AMD power reduction

2010-02-07 Thread Jean-Francois
The disk I/O + samba doesn't stress the CPU enough so it does not speed up. Which is good :) I expect my disk I/O to keep CPU usage low, that's why we have all that DMA, I/O controllers and stuff. Bad thing is, with the lowest CPU multiplier, something else is slowed down. Maybe the

Re: AMD power reduction

2010-02-07 Thread Nick Holland
With all this talk about power reduction...I'm going to toss out one small suggestion: Get a Wattmeter, and measure... Don't waste your time speculating. An ammeter and high school physics V*A=Watts doesn't cut it for AC (in general -- a lot of machines are power-factor corrected now so V*A

Re: AMD power reduction

2010-02-07 Thread ropers
On 8 February 2010 04:10, Nick Holland n...@holland-consulting.net wrote: With all this talk about power reduction...I'm going to toss out one small suggestion: Get a Wattmeter, and measure... Don't waste your time speculating. An ammeter and high school physics V*A=Watts doesn't cut it for

Re: AMD power reduction

2010-02-07 Thread Jussi Peltola
On Sun, Feb 07, 2010 at 10:10:22PM -0500, Nick Holland wrote: With all this talk about power reduction...I'm going to toss out one small suggestion: Get a Wattmeter, and measure... Don't waste your time speculating. An ammeter and high school physics V*A=Watts doesn't cut it for AC (in

Re: AMD power reduction

2010-02-07 Thread Robert
On Sun, 7 Feb 2010 20:41:31 +0100 frantisek holop min...@obiit.org wrote: hmm, on Sun, Feb 07, 2010 at 07:10:29PM +0100, Robert said that On Sun, 7 Feb 2010 18:44:13 +0100 Jean-Francois jfsimon1...@gmail.com wrote: Is there something one can do to make the system fall into sleep in

Re: AMD power reduction

2010-02-05 Thread Michal
On 04/02/2010 23:02, Jean-Francois wrote: All, I am looking forward to reduce the TDP for a server planned to be built. As low as possible shall be best, is AMD cool'n quiet operating with latest OpenBSD ? Regards Depending on what you where looking at, you can reduce the voltages (if

Re: AMD power reduction

2010-02-05 Thread Jean-Francois
Le vendredi 05 fivrier 2010 11:17:51, vous avez icrit : On 04/02/2010 23:02, Jean-Francois wrote: All, I am looking forward to reduce the TDP for a server planned to be built. As low as possible shall be best, is AMD cool'n quiet operating with latest OpenBSD ? Regards Depending

Re: AMD power reduction

2010-02-05 Thread Michal
Hello, I think of doing this too. What I would like to understand is if I will be able to use the frequency change 1000 / 2000 MHz dynamic load based. Regards Do you mean change the frequency depending on load on the computer...? This is very easy in a virtual environment, I am not

Re: AMD power reduction

2010-02-05 Thread Jean-Francois
Le vendredi 05 fivrier 2010 17:43:30, vous avez icrit : Hello, I think of doing this too. What I would like to understand is if I will be able to use the frequency change 1000 / 2000 MHz dynamic load based. Regards Do you mean change the frequency depending on load on the

Re: AMD power reduction

2010-02-05 Thread Calomel Org
You can use apm. It will only save a few watts, but it may reduce the cooling costs by reducing the heat generated by the CPU. If you have _many_ machines you can easily reduce the temperature of the server room by a few degrees C. Advanced Power Management control

Re: AMD power reduction

2010-02-05 Thread Schöberle Dániel
From: Jean-Francois [mailto:jfsimon1...@gmail.com] Sent: Friday, February 05, 2010 5:46 PM Le vendredi 05 fivrier 2010 17:43:30, vous avez icrit : Hello, I think of doing this too. What I would like to understand is if I will be able to use the frequency change 1000 / 2000 MHz

Re: AMD power reduction

2010-02-05 Thread Jean-Francois
Le vendredi 05 fivrier 2010 20:07:51, Schvberle Daniel a icrit : From: Jean-Francois [mailto:jfsimon1...@gmail.com] Sent: Friday, February 05, 2010 5:46 PM Le vendredi 05 fivrier 2010 17:43:30, vous avez icrit : Hello, I think of doing this too. What I would like to