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AR# 64717

AXI Performance Monitor v5.0: Read and Write Latency Count units & values unclear in PG037


The AXI Performance Monitor (PG037) details the read and write latency counts in profile mode.

However, the following is unclear:

  1. The unit of measurement used is not detailed.
  2. Is the resulting value a measurement of the last transaction or an average (or sum) of all transactions?


  1. The Unit of measurement is the clock ticks for the AXI interface that the APM is monitoring.
  2. Profile is a counter of all of the transactions. So it is an accumulation of data.

This is planned to be added to the Product Guide in a future revision.

AR# 64717
Date Created 06/02/2015
Last Updated 12/08/2015
Status Active
Type General Article
  • AXI Performance Monitor