linuxaudio.org

On 07/12/2011 11:15 AM, Tim Blechmann wrote:

quoted text
>>> 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

quoted text
> 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
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