Re: [PATCH] turbostat, servers do not support uncore power register

From: Prarit Bhargava
Date: Sun Jan 19 2014 - 08:21:49 EST

On 01/18/2014 10:50 PM, Len Brown wrote:
> On Thu, Dec 19, 2013 at 7:27 PM, Prarit Bhargava <prarit@xxxxxxxxxx> wrote:
>> From the Intel Software Developer's Manual section 14.7.4,
>> "For server platforms, PP1 domain is not supported, but its PP0 domain
>> supports the MSR_PP0_PERF_STATUS interface."
>> When I run 'turbostat ls' I see the following error:
>> /dev/cpu/0/msr offset 0x641 read failed
> Let me know if you see this when running turbostat v3.6 or later.
> you can find that version in the linux-next tree.

Len, looks like v3.6 works -- I'll do some additional testing to confirm but
AFAICT it does work on the affected systems.


> thanks,
> Len Brown, Intel Open Source Technology Center
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