saving power in a Dell Poweredge 750.

[Bruno Ducrot]

On Wed, Jan 10, 2007 at 10:49:40AM -0800, George Hartzell wrote:
> Peter Jeremy writes:
>  > On Wed, 2007-Jan-10 09:34:21 -0800, George Hartzell wrote:
>  > >I hooked my kill-a-watt meter up and ran the machine for a couple of
>  > >days and it uses 88 watts (3.90KWH/44.01H).
>  > 
>  > What was it doing for those couple of days?  [...]
> 
> It's a small time mail server and web host.  It was running under its
> real world load.
> 
>  > I presume you confirmed that cpufreq/powerd was actually functioning
>  > (ie the CPU frequency was being changed).
> 
> Yep, or at least I confirmed that powerd -v from a shell cycled up and
> down w/ demand, then I configured it to run as a daemon and confirmed
> that was cpufreq was loaded and that powerd was running in the
> background.
> 
>  > >That surprised me a bit, and seems to suggest that it's spending most
>  > >of its energy spinning fans or something.
>  > 
>  > PSU overheads, fans, northbridge, video, RAM, disk, ...  it all adds up.
> 
> That's sort of what I was figuring, it is/was just that my laptop
> experience with powerd and battery life suggested that there would be
> more of a difference.
> 
>  > I can't specifically help with the Dell.
> 

What specific driver(s) were loaded actually?
A devinfo might help.

Cheers,

-- 
Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.