GPU Performance

Here is a basic explanation of what the CPU is used for. The CPU is used for the following

• Decoding the incoming RTSP stream

• Encoding any outgoing annotated RTSP 

• Resizing frames before being passed to the analytic engine

• Preprocessing before the frame is passed to the GPU for the DL tracker to process

The first 3 points are currently performed for all trackers, the standard motion object tracker and the DL trackers.

The last point is performed when using the DL trackers and requires some additional resources from the CPU. As a result, the number of channels that can be supported on a particular CPU is reduced when using the DL trackers.

This chart is giving some overview how VCA can perform with GPU. Different scenarios may affect performance.