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Line 1: In [[computer science]], '''Performance Application Programming Interface (PAPI)''' is a portable [[~~applciation~~application programming interface\|interface]] (in the form of a [[library (computing)\|library]]) to [[hardware counter\|hardware performance counters]] on modern [[microprocessor]]s. It is being widely used to collect low level performance metrics (e.g. [[instruction]] counts, [[clock cycle]]s, [[cache miss]]es) of computer systems running [[UNIX]]/[[Linux]] [[operating system]]s. PAPI provides predefined high level hardware events summarized from popular processors and direct access to low level native events of one particular processor. Counter [[multiplexing]] and [[overflow]] handling are also supported.

Performance Application Programming Interface: Difference between revisions