saving power in a Dell Poweredge 750.

[George Hartzell]

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.

Thanks for the thoughts!

g.