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Page: Optimizing OpenWebRX for speed
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Adding support for new receiver hardware Additional features for the web interface Benchmarks Calibrating waterfall display levels Common problems and their solutions Correcting the frequency offset Customizing OpenWebRX for your station Help! I'm getting audio underruns or overruns! Home I'm getting a "short write" error My receiver is not listed on sdr.hu Optimizing OpenWebRX for speed Replay previously recorded IQ clip with OpenWebRX Running OpenWebRX on system startup Running OpenWebRX on the BeagleBone Running OpenWebRX on the Odroid C2 Setting up OpenWebRX on a Raspberry Pi 2 Setting up multiple receivers on the same machine Setting up your router for port forwarding Setup OpenWebRX for HTTPS Speed up & Secure with CloudFlare Upgrading OpenWebRX to a newer version Using GrOsmoSDR as signal source Using OpenWebRX with AFEDRI SDR Using OpenWebRX with Elad receivers Using OpenWebRX with FiFi SDR Using OpenWebRX with Perseus Using OpenWebRX with S9 C Using OpenWebRX with SDRplay Using OpenWebRX with an AirSpy Using OpenWebRX with an AirSpyHF (IW0HDV version) Using OpenWebRX with an AirSpyHF Using OpenWebRX with the audio card as a VLF receiver Using RTLSDR in direct sampling mode with OpenWebRX Using RTLSDR on HF with an upconverter Using SoapySDR via rx_tools with OpenWebRX
4 Optimizing OpenWebRX for speed
András Retzler edited this page 2018-11-25 21:56:42 +01:00

To decrease OpenWebRX CPU usage:

  • in config_webrx.py:
  • you can set fft_size lower (which degrades horizontal resolution of the waterfall display),
  • you can set fft_voverlap_factor to 0,
  • in csdr.py:
  • you can set transition bandwidths higher (this degrades filter sharpness by decreasing the length of the kernel, but also decreases CPU usage).