Hi all, I am experiencing very high cpu load (100%, just pulseaudio) on an embedded system in hfp mode (call audio). A2dp mode which runs on a much higher sample rate (but just in one direction) in comparison uses only 30% cpu. Playing wav files is also no problem. My system specs are: - pulseaudio 9.0 - bluez 5.41 - ofono 1.18 - ARM Cortex-A8 embedded system - soundcard used is a dummy driver, communicating over bidirectional 8 channel TDM with an FPGA. - soundcard is running at 48k sample rate and s32le format - pulseaudio adapts these settings during alsa init (alsa-sink, alsa-source) I've tried messing with the settings (e.g. tsched, fragments, resampling). Of those only resampling has an effect (different profiling load distribution). But trivial and speex-1 are equally bad (trivial uses multiple divisions that are not optimized for ARM). Today I even patched out the resampling completely. Still uses 100%. Profiling shows the cpu usage is broadly distributed across multiple pulseaudio fuctions. Does anyone have an idea why the performance is so bad in hfp only? Regards, Jonas
