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Journeyman III
Journeyman III

Data fabric performance counters

I had some problems trying to use the data fabric performance counters on an AMD EPYC 7551p machine.

In the 17h family manual, I found the description for those data fabric counter (PPR for AMD Family 17h Models 01h,08h B2), but it lacks the description for the counting events that can be selected.  I found data fabric counter events description in a bulldozer chip manual (the data fabric counters IDs seems to be identical with the 17h 01h manual), but I did some tests on the EPYC machine, it seems like the event selection values are different from the bulldozer's manual. 

Does someone know where I can find this missing information? 

Thanks!

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