Hello Thabet, If you directly hook up your "Osmocom Source" (or an equivalent) to a "Null Sink", and if it still overflows, then your USB host is not keeping up. If it stops overflowing, your CPU is not keeping up with your GNU Radio flowgraph and you may have to either optimise your flowgraph or use a faster system.
Virtual machine harms the USB performance, so maybe you want to try running GNU Radio natively as well (live booting with a USB thumb drive, maybe). Regards, Kyeong Su Shin ________________________________ 보낸 사람: Thabet GHARBI <gharbi.tha...@gmail.com> 대신 Discuss-gnuradio <discuss-gnuradio-bounces+ksshin=postech.ac...@gnu.org> 보낸 날짜: 2019년 11월 4일 월요일 오후 7:17 받는 사람: discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org> 제목: GNURadio app overflow with hackrf Hello, I'm running a GNURadio app on my laptop with HackRF. My sampling rate is 13.5MHz. I have permanently overflow. How can I check if it's due to: - ADC overflow of HackRF hardware ? - My laptop which is maybe not powerful enough ? (VirtualMachine: Ubuntu 18.04, 2 cores allocated i7 @3GHz, 4GB RAM allocated) - GNURadio framework limitation? Best Regards,
