search

gqrx-sdr / gqrx

Software defined radio receiver powered by GNU Radio and Qt.
http://gqrx.dk
GNU General Public License v3.0
3.09k stars 544 forks source link

GQRX start takes long #1111

Open Ta-2om opened 2 years ago

Ta-2om commented 2 years ago

Hello,

is not a big deal, but new installed (from the source) GQRX is taking too long to start. I can live with that. Here is report when running from console. Any suggestions? Yes I played too much around with other apps and their dependencies.

gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.10.1.1 built-in source types: file rtl rtl_tcp uhd hackrf bladerf rfspace soapy redpitaya file_source :warning: file size is not a multiple of item size Resampling audio 96000 -> 48000 BandPlanFile is /home/ersoy/.config/gqrx/bandplan.csv BookmarksFile is /home/ersoy/.config/gqrx/bookmarks.csv [INFO] [UHD] linux; GNU C++ version 9.2.1 20200304; Boost_107100; UHD_3.15.0.0-2build5 gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.10.1.1 built-in source types: file rtl rtl_tcp uhd hackrf bladerf rfspace soapy redpitaya Using device #0 Realtek RTL2838UHIDIR SN: 00000110 Found Rafael Micro R820T/2 tuner

argilo commented 2 years ago

How long exactly does it take (in seconds)?

Could you run Gqrx in gdb, press Ctrl+C during a slow startup, and print out the backtrace with bt? That will help determine what is slowing things down. Doing this multiple times will help confirm the source of the issue.

vladisslav2011 commented 2 years ago

I'm experiencing this issue too. Gqrx starts in about 4-5 seconds on my PC. Many gr-osmosdr drivers enumerate all usb devices trying to find something compatible. This takes some time. Gqrx starts in 1-2 seconds when there are no local SDR devices connected (on the laptop with rtl-tcp source).

This block of code https://github.com/gqrx-sdr/gqrx/blob/master/src/qtgui/ioconfig.cpp#L143-L161 executes in about 4 seconds on my PC. Commenting out actual device enumeration on line https://github.com/gqrx-sdr/gqrx/blob/master/src/qtgui/ioconfig.cpp#L143 ( osmosdr::devices_t devs/* = osmosdr::device::find()*/; ) makes gqrx start in 1-2 seconds. But this makes device list empty...