[Novalug] system power

Jon LaBadie novalugml@jgcomp.com
Fri Jul 19 13:35:48 EDT 2013


On Fri, Jul 19, 2013 at 12:54:51PM -0400, Dan Lavu wrote:
> Well volts are easy on the individual components, open hardware monitor
> should give you that. I believe we can use the amps value from the psu
> to calculate wattage, assuming you want calculate power,
> power = amps x watts. 

Shouldn't that be power (watts) = amps X volts ?

jl
> 
> To test the lag in the PDU readings, you can get a clamp voltmeter to read the active line and they are expensive if you want to get readings off of shielded cables like pc power. 
> 
> .. I might be totally wrong, but I'd approach it that way, it's been a long time since I've taken classes on this stuff. 
> 
> On Jul 19, 2013, at 4:51 AM, shawn wilson <ag4ve.us@gmail.com> wrote:
> 
> > I'm curious how much lag a PDU's remote UI reading has and I'd also like to know power draw of the board / proc and video cards individually for certain tasks.
> > 
> > On Jul 19, 2013 4:32 AM, "Dan Lavu" <dan@lavu.net> wrote:
> > What is the objective? Just to find out how much power a system is drawing
> > at the particular moment or are you also trying to graph it? Compare
> > utilization of different hardware?
> > 
> > -----Original Message-----
> > From: novalug-bounces@calypso.tux.org
> > [mailto:novalug-bounces@calypso.tux.org] On Behalf Of Jon LaBadie
> > Sent: Thursday, July 18, 2013 7:13 PM
> > To: novalug@calypso.tux.org
> > Subject: Re: [Novalug] system power
> > 
> > On Thu, Jul 18, 2013 at 12:55:37PM -0400, shawn wilson wrote:
> > > Obviously this would be hardware dependant, but is there somewhere in
> > > /sys or /proc to try to figure out how much power a system is using?
> > 
> > It would be indirect, but if your system is the only thing plugged into a
> > UPS, you might be able to query the UPS for its current load.
> > 
> > jl
> > --
> > Jon H. LaBadie                  novalugml@jgcomp.com
> >  11226 South Shore Rd           (703) 787-0688 (H)
> >  Reston, VA  20190              (609) 477-8330 (C)
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>>> End of included message <<<

-- 
Jon H. LaBadie                  novalugml@jgcomp.com
 11226 South Shore Rd		(703) 787-0688 (H)
 Reston, VA  20190		(609) 477-8330 (C)



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