Glass to glass latency 4k@60fps on Orin AGX

[ShaneCCC]

The buffer looks like acquire by v4l2 APP request by VIDIOC_REQBUFS,
BTW, MMAP is allocate the DMA buffer.

I would suggest to check the timestamp to narrow down the frame done after VI to memory then the less could be the display then check if any chance to improve.

Below is the timestamp relative topic.

Argus::ICaptureMetadata::getSensorTimestamp clock domain in L4T 32.4.4

hello Denisss, since you’re now working with l4r-r32.4.4. please note that there’ll be timestamp modification for next public release. please refer to the statement in Topic 78821, recap as below… we had some changes for Xavier to plumbed up the hardware timestamps into camera software stack. there’ll be start-of-frame and end-of-frame sensor timestamps include in metadata from TSC hardware, by using new interfaces for TSC HW timestamp; you may expect those changes will be include to next p…