On Mon, 2013-03-25 at 22:19 -0400, Richard A. Smith wrote: > On 03/25/2013 02:03 PM, Richard Smith wrote: > >>> Battery life on XO-4 C2 seems significantly improved over previous builds. > >>> We would be interested in a confirmation or otherwise of this in the power > >>> log analysis. > >> > >> I guess you are comparing to 13.1.0 build 36? > >> The big difference here is that 13.1.0 build 36 has automatic power > >> management disabled, it is now enabled in 13.2.0 (not 100% stable just > >> yet, but we continue to shake out the bugs). > > > > Its probably the firmware change rather than a build specific change. > > We turned off unused cores and in q7b23 and that made almost 800mW > > worth of difference across the board in operational power draw. I'll > > do a plot of your power logs though and confirm. > > It appears there is considerable difference between your previous tests > and now. Last round of logs I have from you prior to this one was March > 2nd and prior to that was November 15, 2012 is that correct or did I > miss a batch between November and March? > > Here's a ploy of XO-4 only 13.1.0-32 vs 13.2.0-1 all your other XO-4 > 13.1.0 builds I have were very early and not really interesting from a > power standpoint. > > http://dev.laptop.org/~rsmith/auckland_13.1_vs_13.2.png > > Your peak decreased which I believe is from your firmware upgrade but > does not explain the whole story. A closer look at your log file shows > a much, much higher suspend frequency in 13.2. In your 13.1 tests you > had perhaps 1 or 2 suspends whereas in the 13.2 log files almost every > other line is a suspend event. > > You didn't change your testing procedure did you? Something that would > allow for more idleness? >
I was seeing high cpu usage that was present preventing suspend with earlier builds. Jerry _______________________________________________ Testing mailing list Testing@lists.laptop.org http://lists.laptop.org/listinfo/testing
