From: "Andre Oppermann"
From running a Colo in a place with ridiculus high electricity engery
costs (Zurich/Switzerland) I can tell you that the energy consuption
of routers/telco (70%) and servers (30%) changes changes significantly
throughout the day. It pretty much follows the traffic graph. There
is a solid base load just because the stuff is powered up and from there
it goes up as much as 20-30% depending on the routing/computing load of
the boxes. To simplify things you can say that per packet you have that
many "mWh" (milli-Watt-hours) per packet switched/routed or http requests
answered over the base load. I haven't tried to calulate how much energy
routing a packet on a Cisco 12k or Juniper M40 cost though. Would be
very interesting if someone (student) could do that calculation.
the same variation between night and day here - but from our point of view
the consumption of the air-pack's are making the differences during the day
... traffic-graph and outside temperature-graphs show more or less the same
up and down. Would we interesting to have separate values for the power
consumption between server-equipment and air-co ...