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:

PMU_HN_MC_RETRIES_EVENT

Number of requests that are retried to the memory controller.

PMU_HN_MC_REQS_EVENT

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

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

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