On 07/12/2011 11:15 AM, Tim Blechmann wrote: >>> using preempt_rt, the scheduling latency can be very low (like 10 >>> microseconds), if cpu frequency scaling is applied or smt/hyperthreading is >>> enabled it can be as high as 250 microseconds (which is already quite >>> significant, if one is using small signal vector sizes). >> That's interesting. We're actually benchmarking scheduling latency at the >> moment. > > btw, i have discussed this briefly in my master thesis, section 4.1 [1]. the > effect of the scheduling latency can also be observed in the benchmarks given > in > section 5.
Wow, that's pretty exhaustive.. > and it would be great, if you can share your results, i'd be curious to see > them! I'll setup something when we're done. The tests can actually be found in: http://code.google.com/p/andraudio/source/browse/experiments/scheduling Beware though this is about non-RT. We're trying to see if running multiple inter-connected audio clients is feasible on Android without adding latency. -- Olivier _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev