Greetings, Yesterday I updated my gnuradio/next and UHD installations to: UHD_0001.20101204162446.a51fb2e v3.3.1git-322-ge92f2cb6
I noticed that when changing USRP sample rates using uhd_single_usrp_source the flowgraph will suspend execution and CPU load drops to 0. The flowgraph is still alive in the sense that it is responsive to UI commands and sometimes even resumes execution for 5-10 seconds then stops again. No error message appears in the terminal. The previous versions I have installed don't have this problem: UHD_0001.20101124180824.2568efd v3.3.1git-227-gb245c628 I also tried the combination UHD_0001.20101124180824.2568efd + v3.3.1git-322-ge92f2cb6 and it also has this problem which lead me to suspect gr-uhd rather than uhd. I am using USRP1 and this happens with both WBX and RFX2400. My application is written in Python and Qt, though I don't think that makes any difference because I can reproduce it even with the simplest GRC flowgraph (attached). The major difference is that my application uses gr.top_block.lock() and unlock() when changing sample rate and doing some other reconfiguration, and this is probably why the flowgraph sometimes resumes execution for a few seconds. Let me know if any other info or testing is needed. Alex
uhd_test.grc
Description: Binary data
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