The AXI Performance Monitor (APM) is implemented inside the embedded Video Codec Unit (VCU). The VCU AXI Performance Monitor (VAPM) allows access to system level behavior in a non-invasive way and without burdening the design with additional soft IP.
The APM block is capable of measuring the number of read/write bytes and address based transactions within a measurement window on the AXI master bus from Encoder/Decoder blocks. The APM can additionally measure master ID based read and write latency within a measurement window. The APM supports cumulative latency value along with the number of outstanding transfers being considered for latency measurement. The APM has the ability to interrupt the host processor when the status registers are ready to be read.