DVFS - modifying the processor voltage

DVFS - modifying the processor voltage

I am using cpuspeed daemon (userspace module ) to modify the processor frequency of my processors. Does this automatically
scale down or scale up the voltage too? Or is there a separate command to modify the voltage of a processor?
If so, what is it?

I have Xeon 5520 Nahelem processor. and OS is CentOS 5.3.


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For more complete information about compiler optimizations, see our Optimization Notice.

We asked our engineering contacts, who responded that voltage changes are automatically built into processor performance states. Also, the Linux* cpufreq "userspace" governor and the cpuspeed daemon have been obsolete for several years, having been replaced by the "ondemand" in-kernel governor.

Our contacts also recommend that you join the linux-acpi@vger.kernel.org mailing list to receive support for Linux*/ACPI-related issues.

Lexi S.
Intel Software Network Support
Contact us: http://www.intel.com/cd/ids/developer/asmo-na/eng/58987.htm

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