Путеводитель по Руководству Linux
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   perf_event_open    ( 2 )

настроить мониторинг производительности (set up performance monitoring)
  Name  |  Synopsis  |  Description  |  Return value  |  Error  |  Versions  |    Conforming to    |  Note  |  Bugs  |  Examples  |  See also  |

Стандарты (Conforming to)

This perf_event_open() system call Linux-specific and should not
       be used in programs intended to be portable.