Konrad Rzeszutek Wilk konrad.wilk@oracle.com writes:
On Sat, Jun 14, 2014 at 09:07:51AM +0200, lee wrote:
Konrad Rzeszutek Wilk konrad.wilk@oracle.com writes:
I am wondering if you are using an older kernel. The xen-acpi-processor driver should be loaded which would give the C and P states to the hypervisor. Which in turn would result in those above commands providing the right data.
Linux heimdall 3.2.0-4-amd64 #1 SMP Debian 3.2.57-3+deb7u2 x86_64 GNU/Linux
This is what comes in Debian. Unfortunately, this kernel crashes when I'm copying data to a domU NFS server over the network :(( I need to find out how to get some useful information out of it to make a bug report.
How do I know whether the xen-acpi-processor driver is loaded or not?
lsmod
Well, yes, I didn't know what the name of this module exactly is. There's also the "processor" module.
But it looks like v3.4 and later were the kernels that started having this driver. That would explain why it does not exist as you are using 3.2.
Because of the crashes, I've upgraded to a 3.14.5-1~bpo70+1 kernel from Debian backports. That one does have the "xen-acpi-processor" module, and it's working. I don't know yet if it'll crash, though.