Langsdorf, Mark wrote:
I have an AMD64 X2 4400+ and had noticed that the CPU frequency (as reported by a Windows XP Pro virtual machine running under VMware 5.5beta on SuSE 10 x86_64 host) is being reported as 1GHz.
You're welcome.
So I did a bit of digging and found that cat /proc/cpuinfo gives:
...
Sorry if this is a repetition of the earlier thread regarding CPUFREQD, but I am still uncertain of the implications of the bug in the CPU frequency scaling. Is there a workaround?
The SUSE SL10.0 kernel doesn't have any problems with CPU frequency scaling. The reported speed of 1 GHz that you're seeing is a feature provided by AMD: when your processor isn't doing anything, it reduces its frequency and voltage in order to dramatically reduce the amount of power it needs to run.
If your system were actually running a significant load, the frequency would go up. You can check the current frequency with the following command: cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
If you want to know more about how to influence the frequency of your system, try man powersave
I hope this helps.
-Mark Langsdorf AMD, Inc.
Thanks for getting back to me. However, when I look at the cpuinfo_cur_freq all it does is hop between 1GHz and 2.2GHz - this is reminiscent of the earlier thread on powersaved?? Is this the expected behaviour? Also, I read somewhere that there is a hotfix to deal with AMD64 X2 TSC issues in Windows XP? I'm assuming that I need to apply this in a VM also - where do I find this hotfix? Cheers, Jon -- Jonathan Brooks (Ph.D.) - Research Fellow PaIN Group, Department of Human Anatomy & Genetics, University of Oxford, South Parks Road, Oxford, OX1 3QX tel: +44(0)1865-282654 fax: +44(0)1865-282656 web: http://www.fmrib.ox.ac.uk/~jon