I am using Nsight Systems to profile an application on the Jetson Xavier. I am using gstreamer, via OpenCV, to render a video stream from a camera using this call to set up the renderer:
cv::VideoWriter writer("appsrc ! videoconvert ! video/x-raw, format=BGRx " \ "! nvdrmvideosink sync=false conn-id=0 set-mode=1", 0, (double)FRAME_RATE, cv::Size(1920,1080));
When I profile the application, there is a line at the bottom of the Timeline View that says “BufferScan (0:0)”. Each time a frame renders, I see a bar there with information regarding a handle ID, and times referring to queued, posted, and activated. What do each of these things refer to, and where can I find more information or some documentation?