Multiplexing PMU counter

Software Tuning, Performance Optimization & Platform Monitoring

Discussion regarding monitoring and software tuning methodologies, Performance Monitoring Unit (PMU) of Intel microprocessors, and platform updating.

Multiplexing PMU counter

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Hello,

I am interested in multiplexing a PMU counter for counting different types of events for various periods of time. For example using counter ID 0 to count alternatively LLC_MISSES for 2 seconds and LLC_REFERENCES for 3 seconds.

The question would be if there are some issues with this approach and in that case is there any workaround ?

Thanks in advance,

Cosmin

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