NAME

       libpfm_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  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>

                                                  August, 2012                                         LIBPFM(3)