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xen-devel
Re: [Xen-devel] RFC: cpu frequency scaling
Keir Fraser wrote:
Frequency changes in dom0, please. The 'small dom0' issue is easily handled
-- create a driver domain to handle the frequency management. Or move the
potentially resource-intensive processes in dom0 out to a domU
or have a cpufreq "driver domain"...
OK, I'll take a look at how we can do these things.
I'm guessing the way to start would be having either userspace
cpufreq code polling the hypervisor for CPU load, or have a
drivers/cpufreq/cpufreq_ondemand-xen.c that gets the CPU load
information from the hypervisor.
I'm guessing something like xentop already gets the right info
from the hypervisor in a relatively efficient way, or some of
the code in libvirt.
I'll dig around to see what code to hook into...
--
Who do you trust?
The people with all the right answers?
Or the people with the right questions?
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