powernow-k8 and thermal / voltage data

DISCUSSION Mathew Brown 2 participants 2 messages Oct 16, 2006 – Oct 26, 2006 ACPI

Share & tools

Mathew Brown

author

2006-10-16 13:50 UTC #0 lore raw

Hi,
I have several servers with Opteron processors running RHEL v4. I've successfully gotten CPU frequency scaling working (which I tested by looking at the cpu frequency before and during running a CPU intensive task). However, there are currently 2 issues:

1) cat /proc/acpi/thermal_zone/* is empty (there's nothing under the thermal_zone directory)

2) I get the impression that the voltage doesn't change even though the CPU frequency changes. Is there any way to check for this? Thanks.

Thanks for your help.

Signature · 6 lines

  Mathew Brown
  [email protected]

-- 
http://www.fastmail.fm - One of many happy users:
  http://www.fastmail.fm/docs/quotes.html

Dominik Brodowski

2006-10-26 03:08 UTC #1 lore raw

Hi,

Quoted 6 lines · Mathew Brown

I've successfully gotten CPU frequency scaling working (which I tested by looking at the cpu frequency before and during running a CPU intensive task). However, there are currently 2 issues:
1) cat /proc/acpi/thermal_zone/* is empty (there's nothing under the thermal_zone directory)

That's a BIOS issue -- if the BIOS does not expose thermal zones, then they cannot be displayed there.

Dominik