Arjan, In my environment [automotive], the processor is typically fixed for the duration of a program. So the question is really about the processor load %age given a specific system usage scenario. Throughout the development phase this metric is then used as a sanity check to ensure the system responsiveness. Power saving is typically much less of a concern than being able to reliably provide certain functionality.
The resolution of the load measurement is an important parameter, though. Spikes of activity that are too short to be visible with a low resolution, might still lead to not meeting deadlines of a comparable duration. Regards, --Pavel Konopelko -----Original Message----- From: Arjan van de Ven [mailto:[email protected]] Sent: Tuesday, June 23, 2009 17:38 To: Konopelko, Pavel (P.) Cc: [email protected] Subject: Re: [Moblin Dev] Performance monitoring Konopelko, Pavel (P.) wrote: > Hello everybody, > > > > Is there a standard / recommended performance measurement tool for > moblin2? > > > > I am primarily interested in monitoring the CPU load either in real-time > or recorded over a defined time interval. Any hints are highly > appreciated. > > btw one of the things to be careful with is what you mean by "cpu load". A cpu running 40% of the time, at 800Mhz is obviously very different from a cpu running 40% at 1600Mhz. So just looking at cpu usage %age is not very useful if you want to answer the question "how much more work can I run". But if your question is "how much power saving from idle do I get", it might be a good metric. Without qualifying what kind of thing you want to use the number for, it is really hard to answer your question... _______________________________________________ Moblin dev Mailing List [email protected] To manage or unsubscribe from this mailing list visit: https://lists.moblin.org/mailman/listinfo/dev or your user account on http://moblin.org once logged in. For more information on the Moblin Developer Mailing lists visit: http://moblin.org/community/mailing-lists
