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Questions about classic cache prefetcher stat defination

AS
Abhishek Singh
Tue, Dec 5, 2023 2:09 PM

Hello,

Does anyone know why doesn't the prefetcher coverage statistic in the
classic cache account for the pfUsefulButMiss metric? The existing
definition of coverage and accuracy appears flawed, as it fails to
incorporate pfUsefulButMiss in calculating the true useful prefetches
(pfUseful - pfUsefulButMiss).

Hello, Does anyone know why doesn't the prefetcher coverage statistic in the classic cache account for the pfUsefulButMiss metric? The existing definition of coverage and accuracy appears flawed, as it fails to incorporate pfUsefulButMiss in calculating the true useful prefetches (pfUseful - pfUsefulButMiss).