On Wed, Jun 10, 2009 at 09:38:29AM -0700, Kok, Auke wrote: > Madhu Sudan Hari wrote: > > Thanks a lot Auke. One more question. What do you think of using something > > like > > "stress"- a workload generator, for this purpose ? > > > I don't have a particular opinion about any workload simulator other than that > they simulator needs to be appropriate for the research being done. It makes > no > sense to measure data with powertop in a workload which consumes > 10% cpu > time > (or some arbitrary number greater than zero) since powertop is designed to > measure > _idle_ performance of the OS. (IOW "how good can my OS be idle under a > minimal or > zero load").
I beg to differ. I personally used powertop to measure the (energy-)load that a daemon exerts on my system under different configurations and with different kernel module options. (IOW: "how often does my daemon wake up my system in this configuration.") About stress test: I don't think you'll get any good information out of a stress test unless the stress load resembles the load that you expect to get in later use. cheers -henrik _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
