SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The L3 interconnect implements performance monitoring probes on initiator (master) interfaces. The master latency statistics are computed within a user-defined window and periodically reported to the user through the CT_STM interface.
The probes can be configured to filter latencies in four classes and report to the user a latency distribution along execution.
Because the performance metrics and the software events are exported through a unified export channel, it is possible to correlate latency trends with ongoing execution and system context.
Because computing latency requires maintaining the state between request and response ports, the probe cannot compute latency statistics on 100 percent of the initiator traffic. Hence, latency histograms must be extracted on large execution windows to be accurate.