Prev: Any chance to run acpi_cpufreq on ATOM N270 (HP Mini)?
Next: pdftk for SuSE 9
From: fabrice on 20 Jun 2010 11:18
Hi group,

I've just installed 11.3RC1 on 2 test boxes:
-one with a Phenom II X6 CPU (1055)
-the other with a Phenom X4 II cpu (955)

I've noted same behavior on the 2 boxes, which raises the question :
CPU is always at max frequency on all cores (3.2GHz for 955, 3.3GHz for
1055), even with 0% load. As a side effect, the power consumption is
higher and the CPU temperature also.

This behavior is not present in 11.2 (normal frequency scaling starting
from 800Mhz to the max; I know the 1055 CPU is badly managed under 11.2
without the 'one line patch' in powernow-k8.c, but this is not the topic
of my post -maybe as a side effect?).

kernel in 11.3 RC1 : 2.6.34-9;

I've manually loaded the powernow-k8 module on the 955 box (modprobe
powernow-k8), and all is fine after (freq has decreased to 800Mhz, and
grows if load is present).

So here are my questions:
1) Is this a bug or a feature ?
2) If it's a feature, how to force the loading of powernow-k8 at boot time ?

TIA
fabrice
From: fabrice on 20 Jun 2010 11:47
Le 20/06/2010 17:18, fabrice a écrit :
> Hi group,
>
> I've just installed 11.3RC1 on 2 test boxes:
> -one with a Phenom II X6 CPU (1055)
> -the other with a Phenom X4 II cpu (955)
>
> I've noted same behavior on the 2 boxes, which raises the question :
> CPU is always at max frequency on all cores (3.2GHz for 955, 3.3GHz for
> 1055), even with 0% load. As a side effect, the power consumption is
> higher and the CPU temperature also.
>
> This behavior is not present in 11.2 (normal frequency scaling starting
> from 800Mhz to the max; I know the 1055 CPU is badly managed under 11.2
> without the 'one line patch' in powernow-k8.c, but this is not the topic
> of my post -maybe as a side effect?).
>
> kernel in 11.3 RC1 : 2.6.34-9;
>
> I've manually loaded the powernow-k8 module on the 955 box (modprobe
> powernow-k8), and all is fine after (freq has decreased to 800Mhz, and
> grows if load is present).
>
> So here are my questions:
> 1) Is this a bug or a feature ?
> 2) If it's a feature, how to force the loading of powernow-k8 at boot time ?
>
> TIA
> fabrice
Seems problem has been already seen:
https://bugzilla.novell.com/show_bug.cgi?id=615738

fabrice
From: 1jam on 20 Jun 2010 15:24
I think you'll find the openSUSE factory mailing list is a better place to
discuss & get help with RC1. Bugzilla is also good as you found.

cheers

p.s. according to manufacturer specs, the 1055 tops out at 2.8 GHz. The
3.3GHz rating is for turbo mode... However these new X6 chips are VERY
overclockable, so you'll probably be fine running all cores at 3.3. Stress
test it with memtest & systester.
From: fabrice on 20 Jun 2010 23:18
Le 20/06/2010 21:24, 1jam a écrit :
> <snip>
> p.s. according to manufacturer specs, the 1055 tops out at 2.8 GHz. The
> 3.3GHz rating is for turbo mode... However these new X6 chips are VERY
> overclockable, so you'll probably be fine running all cores at 3.3. Stress
> test it with memtest & systester.

yes you're right, the 1055 has a max at 3.3 only in turbo mode on half
of the cores...but what I have seen with 2.6.34-9 (without installing
HAL) was that the 6 core were running at 3.3 during a kernel compilation
(make -j 6) !
feature or bug ? don't know...

with HAL installed, all 6 core run now at 2.8 under heavy load (kernel
compilation) and drop at 800Mhz when no load, as usual...I've lost the
turbo feature ! I think I still have to wait a bit until that turbo
feature is correctly implemented in the kernel, but for now I don't
care. Maybe my mobo or my benchmark are incorrect...

Thanks for your answer
fabrice
From: Rajko M. on 20 Jun 2010 23:19
fabrice wrote:

> Le 20/06/2010 17:18, fabrice a écrit :
....
> Seems problem has been already seen:
> https://bugzilla.novell.com/show_bug.cgi?id=615738

Does hal installation solve a problem?

There was some discussion on the opensuse-factory mail list regarding hal
installation:
http://lists.opensuse.org/opensuse-factory/2010-06/msg00232.html

--
Regards Rajko,
 |  Next  |  Last
Pages: 1 2
Prev: Any chance to run acpi_cpufreq on ATOM N270 (HP Mini)?
Next: pdftk for SuSE 9