Hi all, I'm working on a realtime audio application running on a rk3288 platform. The application is written in the JUCE framework, and uses ALSA for audio output. I build the application in a debian jessie chroot since it needs a bunch of libraries compiled for armhf. The application used to run fine on 4.8 mainline, without noticable audio dropouts. I had to upgrade recently to 4.10 mainline to get the audio gadget driver working, but now the application has audio dropouts (pause in the audio output). I have been using 44100 hz sample rate and 960 samples buffer size for testing. I increased the buffer size to 1280 which seemed to improve things a little, and then after googling around I changed the IO scheduler to noop (it was set to CFQ), which further increases the performance. I now only have occasional audio dropouts. The application does a lot of I/O via HID and has 4 audio processing threads for signal processing, besides other threads and callbacks for HID I/O. Does anyone know if there are specific settings to pay attention to for running realtime audio processing applications on mainline 4.10, and if anything has changed with regards to how threads are scheduled, between 4.8 and 4.10? Just trying to understand why my application behaves differently now on 4.10 and if this is due to changes that have been applied and kernel config settings I might not be aware of. Thanks for helping! Bert
