[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [V3] x86/cpuidle: get accurate C0 value with xenpm tool

All comments has been addressed, just changelog is written partly.

On Fri, 2015-05-08 at 09:35 +0100, Jan Beulich wrote:
> >>> On 08.05.15 at 10:11, <huaitong.han@xxxxxxxxx> wrote:
> > When checking the ACPI funciton of C-status, after 100 seconds sleep,
> > the sampling value of C0 status from the xenpm tool decreases.
> > Because C0=NOW()-C1-C2-C3-C4, when NOW() value is during idle time,
> > NOW() value is bigger than last C-status update time, and C0 value
> > is also bigger than ture value. if margin of the second error cannot
> > make up for margin of the first error, the value of C0 would decrease.
> > 
> > Signed-off-by: Huaitong Han <huaitong.han@xxxxxxxxx>
> Please address all comments on the previous iteration before
> re-submitting.
> Jan

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.