6.6 Ring performance events

You can use the link utilization event between two XPs to detect hot links on interconnects by measuring the token valid counts at each XP. This event helps to detect incorrect routing algorithms or device placement.

PMU_XP_VALID_FLITSignal event whenever token valid is cleared on the bus, indicating that a valid packet is passing through an XP on the specified bus.
Non-ConfidentialPDF file icon PDF versionARM 100052_0001_00_en
Copyright © 2014, 2015, 2017 ARM Limited or its affiliates. All rights reserved.