LIBPFM(3)                 Linux Programmer's Manual                LIBPFM(3)

NAME         top

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

SYNOPSIS         top

       #include <perfmon/pfmlib.h>

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

DESCRIPTION         top

       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         top

       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         top

       Stephane Eranian <>

COLOPHON         top

       This page is part of the perfmon2 (a performance monitoring library)
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                                August, 2012                       LIBPFM(3)