Measuring power

Jasper jaspermccrea at
Wed Apr 29 12:23:01 BST 2009

2009/4/29 Nick Cleaton <nick at>:

> One possibility might be to measure the heat output of the servers,
> rather than the electricity input.  If you assume that the servers lose
> heat mainly by pumping hot air out with fans, you'd need to measure both
> the air flow rate and the difference between output air temperature and
> input air temperature.

Fascinating, but there would be no way of calibrating this, unless you
built an identical server room that you could play with.

The processor temperatures (with some calibration to room temperature)
might have a mappable relation to power consumption.


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