NAME libpfm_intel_wsm_unc - support for Intel Westmere uncore PMU

SYNOPSIS

       #include <perfmon/pfmlib.h>

       PMU name: wsm_unc
       PMU desc: Intel Westmere uncore

DESCRIPTION

       The  library  supports  the Intel Westmere uncore PMU as implemented by processors such as Intel Core i7,
       and Intel Core i5 (models 37, 44).

       The PMU is located at the socket-level and is therefore shared between the various cores. By construction
       it can only measure at all privilege levels.

MODIFIERS

       The following modifiers are supported on Intel Westmere processors:

       i      Invert the meaning of the event. The counter will now count 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. This is a boolean
              modifier.

       c      Set the counter mask value. The mask acts as a threshold. The counter will  count  the  number  of
              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].

       o      Causes the queue occupancy counter associated with the event to be cleared  (zeroed).  This  is  a
              boolean modifier.

AUTHORS

       Stephane Eranian <eranian@gmail.com>

                                                 February, 2010                                        LIBPFM(3)