LIBPFM(3) Linux Programmer's Manual LIBPFM(3)NAMElibpfm_intel_snbep_unc_ha - support for Intel Sandy Bridge-EP Home
Agent (HA) uncore PMU
SYNOPSIS
#include <perfmon/pfmlib.h>
PMU name: snbep_unc_ha
PMU desc: Intel Sandy Bridge-EP HA uncore PMU
DESCRIPTION
The library supports the Intel Sandy Bridge Home Agent (HA) uncore PMU.
This PMU model only exists on Sandy Bridge model 45. There is only one
Home Agent per processor socket.
MODIFIERS
The following modifiers are supported on Intel Sandy Bridge C-Box
uncore PMU:
i Invert the meaning of the event. The counter will now count HA
cycles in which the event is not occurring. This is a boolean
modifier
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 mod‐
ifier (t) with a value greater or equal to one. This is a bool‐
ean 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>
August, 2012 LIBPFM(3)
