.TH LIBPFM 3  "August, 2012" "" "Linux Programmer's Manual"

.SH NAME

libpfm_intel_snbep_unc_ha - support for Intel Sandy Bridge-EP Home Agent (HA) uncore PMU

.SH SYNOPSIS

.nf

.B #include <perfmon/pfmlib.h>

.sp

.B PMU name: snbep_unc_ha

.B PMU desc: Intel Sandy Bridge-EP HA uncore PMU

.sp

.SH 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.

.SH MODIFIERS

The following modifiers are supported on Intel Sandy Bridge C-Box uncore PMU:

.TP

.B i

Invert the meaning of the event. The counter will now count HA cycles in which the

event is \fBnot\fR occurring. This is a boolean modifier

.TP

.B 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.

.TP

.B 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].

.SH AUTHORS

.nf

Stephane Eranian <eranian@gmail.com>

.if

.PP