On Monday 04 January 2010, Pavel Machek wrote: > > > > > Using /proc/acpi/battery/BAT1/state I measured the energy drawn in 10 minutes > > > > both with the network adapter in D0 and D3hot. The results were that with the > > > > network adapter in D0 the box drew 2476 mWh, while with the network adapter in > > > > D3hot it drew 2361 mWh. The difference is 115 mWh, or about 5% on this > > > > particular box. > > > > > > > > This means about 0.1 Wh in 10 minutes, so we can save about 0.6 Wh per hour. > > > > > > Which means it saves 0.6W :-). Measuring power in Wh/h is "interesting". > > > > You can't save power, you can only save energy. Wh is just an energy unit. > > Of course we can save power, you just did :-). > > (And in some cases -- data centers, limited cooling -- you are limited > by power, not energy. But still energy is what you pay for, isn't it? > You are right that on notebooks, energy is more important.) You may require less power to run, so if that's what you mean by "saving", then I agree. :-) Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
