Incorrecly Detecting My Cpu Speed

earlier, I was using the x86 version of opensuse 10.2, and it would detect my CPU (amd athlon 64 3000+) as being only 1 ghz rather than 1.8 ghz. I was advised to reinstall with the 64 bit version, but the problem still remains. Both the x86 and the x86_64 versions show my bogomips as being 2011.57 rather than the 3000-4000 range.
I check the bogomips by doing "less /proc/cpuinfo" in the terminal

any help would be greatly appreciated

Suse by default will enable cpu frequency scaling; my own AMD will generally report as 800 MHz but will spike to 1.8 GHz when the load warrants.

You can verify that Suse is recognizing your processor's speed capabilities correctly by running the command cpufreq-info --hwlimits, this will output two numbers: your minimum speed, and your maximum speed (so in my case it outputs: 800000 1800000). This will at least verify your processor's speed settings are being properly detected.

The kernel frequency management does a good job using the default "dynamic" governor of matching speed to cpu load; if you prefer to leave it off and run a full speed (and full heat/power load) you can use the power management utility in the system tray to manually set the mode to performance.

Hope this helps...

Cheers,
KV

Suse by default will enable cpu frequency scaling;

Cheers,
KV
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My OpenSUSE 10.2 install (x86_64, burned DVD) on a dual opteron system (one is dual 242 the other dual 844) indicates that no cpufreq driver is active. Is this a difference between opteron and athlon64?

My OpenSUSE 10.2 install (x86_64, burned DVD) on a dual opteron system (one is dual 242 the other dual 844) indicates that no cpufreq driver is active. Is this a difference between opteron and athlon64?
[/b]

Check and see if you have the latest BIOS. SuSE expects to see a bios that meets spec as it can only setup what the bios feeds it during the boot process, i.e., does the bios ID "opteron" values.

This a ticky thing. The initial cpu speed and such is determined at boot by the head.s assembly files. These are listed in the /arch directory tree, a different one for each chip. The values are then displayed by the calibrate.c module, at startup. So. if you scheck the log at startup, the bogomips should be accurate. Any BIOS settings regarding CPU speed will not be detected at that time

Bob

My OpenSUSE 10.2 install (x86_64, burned DVD) on a dual opteron system (one is dual 242 the other dual 844) indicates that no cpufreq driver is active. Is this a difference between opteron and athlon64?
[/b]

I get the same with a presario Turion notebook. SUSE 10.1 loaded a driver and scaled the frequency fine but 10.2 doesn't.

Can cpu frequency scaling be used to overclock the processor? Could one edit a config file somewhere to adjust the maximum freq?

You can verify that Suse is recognizing your processor's speed capabilities correctly by running the command cpufreq-info --hwlimits, this will output two numbers: your minimum speed, and your maximum speed (so in my case it outputs: 800000 1800000). This will at least verify your processor's speed settings are being properly detected.

Hope this helps...

Cheers,
KV
[/b]

I'm jumping in on this because I just note my cpu (AMD 64 X2 5200) shows Speed: 2,613.41 MHz in the desktop my computer. I get no result from your command above, but if I just use cpufreq-info, I get this:

cpufrequtils 002: cpufreq-info © Dominik Brodowski 2004-2006
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU

I'm on 10.2 but running 32 bit. 64 just will not install - whatever I do.

Go into the Bios and disable,"Cool n quiet". I am running an AMD 3200+ 64 bit and have been running without cool n quiet for some time without any probs. The machine runs for at least 16 to 18 hours a day.

I'm jumping in on this because I just note my cpu (AMD 64 X2 5200) shows Speed: 2,613.41 MHz in the desktop my computer. I get no result from your command above, but if I just use cpufreq-info, I get this:

cpufrequtils 002: cpufreq-info © Dominik Brodowski 2004-2006
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU

I'm on 10.2 but running 32 bit. 64 just will not install - whatever I do.
[/b]

Just FYI, this is what I get on my openSuSE 10.2, x86_64, AMD x2 3800+, ASUS A8N-SLI Premium, CnQ on:

# cpufreq-info
cpufrequtils 002: cpufreq-info © Dominik Brodowski 2004-2006
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
driver: powernow-k8
CPUs which need to switch frequency at the same time: 0 1
hardware limits: 1000 MHz - 2.00 GHz
available frequency steps: 2.00 GHz, 1.80 GHz, 1000 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 1000 MHz and 2.00 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz (asserted by call to hardware).
analyzing CPU 1:
driver: powernow-k8
CPUs which need to switch frequency at the same time: 0 1
hardware limits: 1000 MHz - 2.00 GHz
available frequency steps: 2.00 GHz, 1.80 GHz, 1000 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 1000 MHz and 2.00 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz (asserted by call to hardware).