[tesla-dev] Turbo Mode Support for Solaris

[Li, Aubrey]

Vinay Devadas wrote:

> Hi Jim,
> 
> I just had a question about the bug you reported about Turbo
> Mode not being supported on PowerTop. Wanted to clarify what
> sort of statistic did you have in mind when you reported the
> bug. With the observability provided by intel, I believe we
> can only say we were in turbo mode for some time during the
> last sampling interval. We feel the average CPU frequency
> overall the last sampling interval may be a more useful
> statistic.  Please let us know on what you think.
> 
I guess we already discussed this issue before?
Turbo mode is exported as P0 = marked frequency + 1Mhz,
but allow the processors to run faster so that the performance can
be improved up to 20%. Average CPU frequency is doable by the
hardware feedback mechanism.

Thanks,
-Aubrey