> >-----Original Message-----
> >From: tesla-dev-bounces at opensolaris.org [mailto:tesla-dev-
> >bounces at opensolaris.org] On Behalf Of Mark Haywood
> >Sent: Monday, July 23, 2007 8:46 PM
> >To: Aubrey Li
> >Cc: tesla-dev at opensolaris.org
> >Subject: Re: [tesla-dev] Power Consumption test
> >
> >Aubrey Li wrote:
> >> Hi list,
> >>
> >> I got a chance to measure the power consumption on linux and solaris,
> >> and of course on the same machine
> >> The following is the result from the power meter.
> >>
> >> 1) Ubuntu 7.04, linux kernel 2.6.20-15, Zero workload.
> >> No. Watt PF Vol Cur
> >> 0 375 .871 PF, 237V, 1.816A,
> >> 1 375 .871 PF, 237V, 1.815A,
> >> 2 376 .874 PF, 237V, 1.814A,
> >> 3 375 .871 PF, 237V, 1.816A,
> >> 4 375 .872 PF, 237V, 1.814A,
> >> 5 375 .872 PF, 237V, 1.814A,
> >> 6 376 .874 PF, 237V, 1.815A,
> >> 7 376 .874 PF, 237V, 1.816A,
> >> 8 375 .871 PF, 237V, 1.815A,
> >> 9 375 .872 PF, 237V, 1.814A,
> >>
> >> 2) Solaris community express, solaris kernel onnv_b67, Zero workload.
> >> No. Watt PF Vol Cur
> >> 0 408 .892 PF, 237V, 1.93A,
> >> 1 408 .892 PF, 237V, 1.93A,
> >> 2 408 .900 PF, 236V, 1.93A,
> >> 3 409 .900 PF, 236V, 1.93A,
> >> 4 409 .900 PF, 236V, 1.93A,
> >> 5 408 .900 PF, 236V, 1.93A,
> >> 6 409 .900 PF, 236V, 1.93A,
> >> 7 408 .900 PF, 236V, 1.93A,
> >> 8 410 .900 PF, 236V, 1.94A,
> >> 9 408 .900 PF, 236V, 1.93A,
> >
> >Well with build 67 of Solaris there is no P-state support and no deep
> >C-state support. Do you know whether the Linux measurement had either
> of
> >these enabled?
>
> I checked just now and found both C-state and P-state are enabled in
> Linux. So it makes no sense to make this comparison.
>
> -Aubrey
Actually, I think it does make sense to make these comparisons.
Solaris does have CPU power management, you just may not have or
enabled it yet. If it is there and enabled, we know there is some work
to do. If it isn't there or not enabled, we will get an idea of how
much we gain by having it.
So the next piece is to get/enable it for Solaris and see what the
results are.
Cheers!
---- Randy
