6.3.4 System-wide events

The memory controller request retries determine whether the memory controller is the bottleneck in the system, which can cause higher request latencies.

The following events can be counted:


Number of requests that are retried to the memory controller.


Total number of requests that are sent to the memory controller.

Calculate the retry rate for requests to the memory controller as follows:

To view this graphic, your browser must support the SVG format. Either install a browser with native support, or install an appropriate plugin such as Adobe SVG Viewer.
Non-ConfidentialPDF file icon PDF versionARM 100052_0001_00_en
Copyright © 2014, 2015, 2017 ARM Limited or its affiliates. All rights reserved.