libpfm_intel_ivbep_unc_ha man page

libpfm_intel_ivbep_unc_ha — support for Intel Ivy Bridge-EP Home Agent (HA) uncore PMU

Synopsis

#include <perfmon/pfmlib.h>

PMU name: ivbep_unc_ha0, ivbep_unc_ha1
PMU desc: Intel Ivy Bridge-EP HA uncore PMU

Description

The library supports the Intel Ivy Bridge Home Agent (HA) uncore PMU. This PMU model only exists on Ivy Bridge model 62.

Modifiers

The following modifiers are supported on Intel Ivy Bridge HA uncore PMU:

e
Enable edge detection, i.e., count only when there is a state transition from no occurrence of the event to at least one occurrence. This modifier must be combined with a threshold modifier (t) with a value greater or equal to one. This is a boolean modifier.
t
Set the threshold value. When set to a non-zero value, the counter counts the number of HA cycles in which the number of occurrences of the event is greater or equal to the threshold. This is an integer modifier with values in the range [0:255].

Authors

Stephane Eranian <eranian@gmail.com>

Info

February, 2014 Linux Programmer's Manual