Performance and event monitoring for a peripheral interconnect

A method of monitoring a peripheral interconnect in a computing system, comprising:

• sending, from a controller to a switch of the peripheral interconnect, a request to monitor the peripheral interconnect, the switch having a first port coupled to a central processing unit (CPU) of a compute node and a second port coupled to a first device, the controller coupled to the switch via an out-of-band interconnect with respect to the peripheral interconnect;
• monitoring, by the switch, the peripheral interconnect in response to the request;
• storing, by the switch, results of the monitoring;
• and
• reading, by the controller, the results of the monitoring from the switch.

An apparatus, comprising:

• a switch for a peripheral interconnect;
• a first port of the switch configured for coupling to a central processing unit (CPU) of a compute node;
• a second port of the switch configured for coupling to a first device of the compute node;
• and
• an interface of the switch configured for coupling to a controller via an out-of-band interconnect with respect to the peripheral interconnect;
• wherein the switch is configured to receive a request from the controller to monitor the peripheral interconnect, monitor the peripheral interconnect in response to the request, store results of the monitoring, and provide the results as stored to the controller.