Hi,
i just installed slack 9.1 on a acer aspire notebook with an AMD Athlon
XP-M 2800+ CPU.
I'd like to know if the real frequency of the CPU changes with the system
load and, in this case, where can i read the REAL work frequency at any
time.
I think the frequency reported in /proc/cpuinfo is the frequency at boot
time, isn't it?

Regards
Francesco

On Thu, 29 Jan 2004 14:35:01 +0000, Francesco wrote:

> Hi,
> i just installed slack 9.1 on a acer aspire notebook with an AMD Athlon
> XP-M 2800+ CPU.
> I'd like to know if the real frequency of the CPU changes with the system
> load and, in this case, where can i read the REAL work frequency at any
> time.
> I think the frequency reported in /proc/cpuinfo is the frequency at boot
> time, isn't it?
>
> Regards
> Francesco

hi,

i think it depends on the ACPI settings in your kernel. with the 2.6.x it
works great, don't know about 2.4.x.

regards
Dino

Francesco wrote:

> Hi,
> i just installed slack 9.1 on a acer aspire notebook with an AMD Athlon
> XP-M 2800+ CPU.
> I'd like to know if the real frequency of the CPU changes with the system
> load and, in this case, where can i read the REAL work frequency at any
> time.
> I think the frequency reported in /proc/cpuinfo is the frequency at boot
> time, isn't it?
>
> Regards
> Francesco

Go online -- the athlon xp-M 2800+ should run at 2.08GHz according to a
google search.

--
43rd Law of Computing:
Anything that can go wr
fortune: Segmentation violation -- Core dumped

On Thu, 29 Jan 2004 09:46:40 -0700, NeoSadist wrote:

> Francesco wrote:
>
>> Hi,
>> i just installed slack 9.1 on a acer aspire notebook with an AMD Athlon
>> XP-M 2800+ CPU.
>> I'd like to know if the real frequency of the CPU changes with the system
>> load and, in this case, where can i read the REAL work frequency at any
>> time.
>> I think the frequency reported in /proc/cpuinfo is the frequency at boot
>> time, isn't it?
>>
>> Regards
>> Francesco
>
> Go online -- the athlon xp-M 2800+ should run at 2.08GHz according to a
> google search.

Ok, but if i issue the command
cat /proc/cpuinfo

i obtain

cpu MHz : 796.105

where is the problem?

Francesco

Francesco wrote:

> On Thu, 29 Jan 2004 09:46:40 -0700, NeoSadist wrote:
>
>> Francesco wrote:
>>
>>> Hi,
>>> i just installed slack 9.1 on a acer aspire notebook with an AMD Athlon
>>> XP-M 2800+ CPU.
>>> I'd like to know if the real frequency of the CPU changes with the
>>> system load and, in this case, where can i read the REAL work frequency
>>> at any time.
>>> I think the frequency reported in /proc/cpuinfo is the frequency at boot
>>> time, isn't it?
>>>
>>> Regards
>>> Francesco
>>
>> Go online -- the athlon xp-M 2800+ should run at 2.08GHz according to a
>> google search.
>
> Ok, but if i issue the command
> cat /proc/cpuinfo
>
> i obtain
>
> cpu MHz : 796.105
>
> where is the problem?
>
> Francesco


You may also want to Check your bios settings before booting. Find out if
the battery settings is set for full performance (full hi cpu clock cycle)
or power savings mode (lower cpu clock cycle)?

I think you may have what's called a speedstep technology mobile cpu.

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Francesco <f.oppedisano@tiscali.it> is thought to have
typed the following text on 2004-01-29:

> Hi,
> i just installed slack 9.1 on a acer aspire notebook with an AMD Athlon
> XP-M 2800+ CPU.
> I'd like to know if the real frequency of the CPU changes with the system
> load and, in this case, where can i read the REAL work frequency at any
> time.
> I think the frequency reported in /proc/cpuinfo is the frequency at boot
> time, isn't it?
>
No it isn't, it's the current frequency, you probably need ACPI if you
want it to happen automatically, when I still was using 2.4.x kernels I
patched them with the cpufreq patch, you might need that too. I'm not
sure if ACPI handles it without the patch for some laptops.

- --
Bartosz Oudekerk

AOLS fortune mod volume VI
Get yourself a copy at: <URL:http://www.etv.cx/~bartosz>
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On Fri, 30 Jan 2004 00:04:32 GMT, SuperDaemon <SuperDaemon@bogus.isp.INVALID.com> wrote:
> I think you may have what's called a speedstep technology mobile cpu.

SpeedStep is an Intel name.

AMD calls their CPU frequency/voltage scaling 'PowerNow!'

--
Rob | If not safe,
Email and Jabber: | one can never be free.
athlonrob at axpr dot net |
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On Thu, 29 Jan 2004 14:35:01 GMT, Francesco <f.oppedisano@tiscali.it> wrote:
> I'd like to know if the real frequency of the CPU changes with the system
> load and, in this case, where can i read the REAL work frequency at any
> time.

What kernel are you using? With ACPI, there may be a little bit of
scaling going on, I'm not sure. I'd, if I were you, upgrade to 2.6.1 or
2.6.2 when it becomes available and check out CPUFreq. It'll let you
set the speed of the CPU depending on what you need to do... really fast
to really slow (when you're on battery, you probably want the
frequency/voltage to both be as low as possible to save a little battery
life)....

Have fun.

--
Rob | If not safe,
Email and Jabber: | one can never be free.
athlonrob at axpr dot net |
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AthlonRob wrote:

> SpeedStep is an Intel name.
>
> AMD calls their CPU frequency/voltage scaling 'PowerNow!'

oh ok, I see, thanks.