[Got in a car accident tonight; replies will be scarce for the next week or two.... :(] On Tue, Apr 01, 2008 at 10:22:28AM +0200, Jean Delvare wrote: > OK. Another question that comes to my mind now is the unit... Do the > chips express the value in Joules internally? I would have expected > Watt-hours. Of course we can convert as needed, but if all known chips > use the same unit then I think we should that unit too, to minimize the > required conversions. The IBM chips report some form of Joules, not Wh. > It really depends on what the chips report. Typically the drivers > should report the values from the chip without too much tinkering > (other than conversion to standard units). If some chips can report > both "instantaneous" and "average" power uses, it makes sense to have > both sets of filenames in the standard interface. If not then I am fine > getting rid of one set. Hmm, I'll think about what I want to do with this. Probably just leave them. > I don't think there is any precedent yet. I suggested this for > unambiguity rather than consistency. Ok. > Oh well, I guess that anything shorter than 1 ms can be considered > "instantaneous power use", so we can go with millisecond. Ok. > Out of curiosity, what are the values supported by the ibmaem chip? I don't know what the lower limits are; it depends on how often the BMC decides to update the counters, and that seems to vary by machine. --D
