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playbackDevice.writeSamples eating CPU #2252
On my system which is a 64-bit Linux box using Alsa for sound, the call to writeSamples on a AudioDevice maxes out a CPU core if the samplerate is 30khz (30000) or higher; however hardly any at all ( < 10% CPU) is used when the samplerate is 20khz (20000) or lower. 44.1khz and 48khz also maxes out a CPU.
Android seems to have no problem whatsoever.