LIBPFM(3)

NAME
libpfm_intel_snbep_unc_r2pcie - support for Intel Sandy Bridge-EP R2 PCIe uncore PMU

SYNOPSIS
#include <perfmon/pfmlib.h>

PMU name: snbep_unc_r2pcie
PMU desc: Intel Sandy Bridge-EP R2 PCIe uncore PMU

DESCRIPTION
The library supports the Intel Sandy Bridge R2 PCIe uncore PMU. This PMU model only exists on Sandy Bridge model 45. There is only one R2PCIe PMU per processor socket.

MODIFIERS
The following modifiers are supported on Intel Sandy Bridge R2PCIe uncore PMU:

i   Invert the meaning of the event. The counter will now count R2 PCIe 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 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 R2PCIe 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 [0:15].

AUTHORS
Stephane Eranian <eranian@gmail.com>