ondemand and p3-m

ondemand and p3-m

[Niko Ehrenfeuchter]

Hi all,

I'm currently trying to get the ondemand-governor working with my PIII-M
(1133 MHz). The system is a ThinkPad X24 using the Intel 830 chipset,
kernel 2.6.15.1 with the corresponding (stable) acpi-patch.

While using the speedstep-ich module works for userspace stuff, echoing
"ondemand" into scaling_governor simply yields an invalid argument
error. Latency issue, I assume...? Turning on cpufreq's debug mode
doesn't tell anything why it won't use the ondemand gov.

Looked through the archive for that issue, but I haven't been _that_
successful, since it lacks some kind of search function... The only
thing I've discovered was a thread in october where Eric Piel posted a
patch for the first-generation 440BX speedstep. Is this patch included
in the current kernel? Should it work for me too?

Any hints?

Niko

Re: ondemand and p3-m

[Eric Piel]

20.01.2006 23:16, Niko Ehrenfeuchter wrote/a écrit:
> Hi all,
> 
> I'm currently trying to get the ondemand-governor working with my PIII-M
> (1133 MHz). The system is a ThinkPad X24 using the Intel 830 chipset,
> kernel 2.6.15.1 with the corresponding (stable) acpi-patch.
> 
> While using the speedstep-ich module works for userspace stuff, echoing
> "ondemand" into scaling_governor simply yields an invalid argument
> error. Latency issue, I assume...? Turning on cpufreq's debug mode
> doesn't tell anything why it won't use the ondemand gov.
> 
> Looked through the archive for that issue, but I haven't been _that_
> successful, since it lacks some kind of search function... The only
> thing I've discovered was a thread in october where Eric Piel posted a
> patch for the first-generation 440BX speedstep. Is this patch included
> in the current kernel? Should it work for me too?
> 
> Any hints?
Hi!

Which driver do you use? Is it speedstep-ich? If so, it's now available 
in vanilla kernel since... 2.6.16-rc1, slightly too bleding edge for 
common mortals but it means it's coming soon!

If you don't want to wait, you can just apply the 2 patches of Mattia 
Dongili on a 2.6.15. ("Move PMBASE..." and "Measure transition latency 
at driver initialization" _updated_)

c u
Eric

Re: ondemand and p3-m

[Gunter Ohrner]

Niko Ehrenfeuchter wrote:
> While using the speedstep-ich module works for userspace stuff, echoing
> "ondemand" into scaling_governor simply yields an invalid argument
> error.

Mh, I guess you compiled the governor as a module, but the
cpufreq_ondemand.ko module isn't loaded?

Scaling with PIII-M and an i8xx chipset should work just fine, especially if
it does using the "userspace" governor.

Greetings,

  Gunter

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Re: ondemand and p3-m

[Niko Ehrenfeuchter]

Hi,

On Sat, 2006-01-21 at 00:15 +0100, Eric Piel wrote:
> 20.01.2006 23:16, Niko Ehrenfeuchter wrote/a écrit:
> > Hi all,
> > 
> > I'm currently trying to get the ondemand-governor working with my PIII-M
> > (1133 MHz). The system is a ThinkPad X24 using the Intel 830 chipset,
> > kernel 2.6.15.1 with the corresponding (stable) acpi-patch.
> > 
> > While using the speedstep-ich module works for userspace stuff, echoing
> > "ondemand" into scaling_governor simply yields an invalid argument
> > error. Latency issue, I assume...? Turning on cpufreq's debug mode
> > doesn't tell anything why it won't use the ondemand gov.
> > 
> > Looked through the archive for that issue, but I haven't been _that_
> > successful, since it lacks some kind of search function... The only
> > thing I've discovered was a thread in october where Eric Piel posted a
> > patch for the first-generation 440BX speedstep. Is this patch included
> > in the current kernel? Should it work for me too?
> > 
> > Any hints?
> Hi!
> 
> Which driver do you use? Is it speedstep-ich?

yep, mentioned it in the second section :-)

> If so, it's now available 
> in vanilla kernel since... 2.6.16-rc1, slightly too bleding edge for 
> common mortals but it means it's coming soon!

ah, that sounds nice. Missed it only very tight...

> If you don't want to wait, you can just apply the 2 patches of Mattia 
> Dongili on a 2.6.15. ("Move PMBASE..." and "Measure transition latency 
> at driver initialization" _updated_)

where can I fetch them? The ml-archives?

Thanks for the fast reply,
Niko

Re: ondemand and p3-m

[Mattia Dongili]

Hello!

On Sat, Jan 21, 2006 at 01:20:14AM +0100, Niko Ehrenfeuchter wrote:
> Hi,
> 
> On Sat, 2006-01-21 at 00:15 +0100, Eric Piel wrote:
[...]
> > If so, it's now available 
> > in vanilla kernel since... 2.6.16-rc1, slightly too bleding edge for 
> > common mortals but it means it's coming soon!
> 
> ah, that sounds nice. Missed it only very tight...
> 
> > If you don't want to wait, you can just apply the 2 patches of Mattia 
> > Dongili on a 2.6.15. ("Move PMBASE..." and "Measure transition latency 
> > at driver initialization" _updated_)
> 
> where can I fetch them? The ml-archives?

Move PMBASE away is here
http://lists.linux.org.uk/mailman/private/cpufreq/2005-November/005466.html

and transition latency measurement here
http://lists.linux.org.uk/mailman/private/cpufreq/2005-December/005490.html

or take them from gitweb:
1: <url>http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=1a10760c91c394dfe4adfefeeaf85cd8098c4894;hp=fc457fa7c0cdbfe96812ba377e508880d600298f</url>
2: <url>http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=9a7d82a89a8bf55b112f2a5c3b3f405eb95a4303;hp=1a10760c91c394dfe4adfefeeaf85cd8098c4894</url>

hth
-- 
mattia
:wq!