Hi,
> Firstly, I would correct the data I posted on the last mail is not credible. > >From several times experiments, I found there are 2 factor affecting > power consumption results so far. > 1) Environment temperature. Different environment temperature results > in different result. > Today the air-condition is the lab is fixed, and the watt from the > power meter lows down to the 380W. > > 2) CPU temperature. The first time testing and the second time testing > has different result. > That means longer the testing runs, higher the power consumption is. > That is frequent situation that with higher CPU temperature, the power consumption of CPU is higher. > > > > Aubrey, > > > > it may be interesting to rerun your tests with build 70, > > which is closing today. The SXCE usually follows in > > two-three weeks after that. It is this build, that includes > > support for Intel Speedstep technology [0]. I guess it > > may make a difference. > > > > > > [0] http://opensolaris.org/os/community/on/flag-days/pages/2007071601/ > > > > > I checked just now, between Build67 and hg tip revision 4700. There > are no big difference. > As the resolution of the power meter is 1W, I got almost the same > result from those two build rev. They are jumping to and fro in the > range (380W to 381W). > > There could be other factors impacting the power consumption value > that I didn't image. > So, how can we get the credible data to driver our power optimization work? > Just few days ago OpenSolaris received support for P-states, this is significant change between build 67 and build 70. Best regards, Milan
