> How does android process events in case of high CPU load? Same way as in the low CPU load. Read data, calls your sensor listener, waits a certain amount of time to provide events at a desired rate. Obviously the details depend on the sensors HAL implementation for a given phone. I've seen a phone where this module did some heavy work by itself and eats up to 45% of CPU. Some phones allows request sensors updates with 0 delay which results in continuous reading and 100% CPU load. But most important: Android is not a real time platform dedicated to the data processing.
On Feb 9, 8:06 am, Heiko <[email protected]> wrote: > Hi, > > I'm currently testing the impact of heavy CPU workload on > accelerometer sampling frequency. It appears, that when CPU workload > is high, the samplerate oscillates between higher and lower than > average values. I'm also storing the timestamp diff between two events > and the test reveals, that there is also an oscillation here. > > You can see the time diff between sensor events > here):http://cl.ly/2S3o2T0w3A1W181i3g3F > > N is the phase with normal CPU load, Y the phase with high CPU load > (around 95%+). > > The influence on the sample rate can be seen in this > chart):http://cl.ly/1T253P041O0R2m1U3Z1V > > How does android process events in case of high CPU load? Does it > collect events and then sends many of them in a burst phase to the > handler of an app? > > Best > Heiko -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
