RE: questions about DVFS in saving energy

["Tomas L. Byrnes" <tomb () byrneit net>]

Top-post due to prior:

VMWare Server 1.x/ Win2K3 server, standalone and as host for above.

VMWare ESXi: Win2K3 and Win2K systems trash volumes.

Basically the CPU scaling on the host makes the guest OS fall apart.

> -----Original Message-----
> From: William Pitcock [mailto:nenolod () systeminplace net]
> Sent: Wednesday, May 13, 2009 3:20 PM
> To: Tomas L. Byrnes; Kai Chen; nanog () merit edu
> Subject: Re: questions about DVFS in saving energy
>
> Xen handles the AMD HE CPUs just fine here. What sort of breakage are
> you experiencing?
>
> William
> ------Original Message------
> From: Tomas L. Byrnes
> To: Kai Chen
> To: nanog () merit edu
> Subject: RE: questions about DVFS in saving energy
> Sent: May 13, 2009 2:31 PM
>
>
> -----Original Message-----
> From: Kai Chen [mailto:kch670 () eecs northwestern edu]
> Sent: Wednesday, May 13, 2009 12:25 PM
> To: nanog () merit edu
> Subject: questions about DVFS in saving energy
>
> Hi, could anyone here have some idea of the following questions about
> Dynamic Voltage/Frequency Scaling techniques used for energy
efficiency,
> or please give a pointer that I can trace,
> 1) how many servers in the market support this technique?
> 2) how many voltages/frequencies can the servers support?
> 3) What's the transition time and cost (power) between these
> voltages/frequencies?
>
> Thanks,
> -Kai
> _______________________________________________________________________
_
> ____________________________________
>
>
> My experience with the AMD HE CPUs has been that the scaling breaks
> Win2K3, and any virtualized environments.
>
>
>
> --
> William Pitcock
> SystemInPlace - Simple Hosting Solutions
> 1-866-519-6149