"deepstream_test1_rtsp_in_rtsp_out.py" low frame rate in multi-stream input

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) NVIDIA GeForce GTX 1660 Ti
• DeepStream Version 6.0
• JetPack Version (valid for Jetson only)
• TensorRT Version latest
• NVIDIA GPU Driver Version (valid for GPU only) 470.82.01
• Issue Type( questions, new requirements, bugs) bugs
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)

“deepstream_test1_rtsp_in_rtsp_out.py” run extremely low frame rate in multiple rtsp stream input. If in single rtsp input, frame rate will be fine.

I have tried other script like deepstream-test3, runtime_source_add_delete. This problem will not occur.

deepstream-test3 and runtime_source_add_delete are all using eglsink which depends on the display drive and HW, deepstream_test1_rtsp_in_rtsp_out is using udpsink which will depends on the network stack. You may try to replace the udpsink to fakesink and try to measure the FPS.

I finally set streammux.set_property("batch-size", number_sources) to solve the problem. L310

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