NAME

       libpfm_intel_skx_unc_upi - support for Intel Skylake X Server UPI uncore PMU

SYNOPSIS

       #include <perfmon/pfmlib.h>

       PMU name: skx_unc_upi[0-2]
       PMU desc: Intel Skylake X Server UPI uncore PMU

DESCRIPTION

       The library supports the Intel Skylake X Server UPI uncore PMU.

MODIFIERS

       The following modifiers are supported on Intel Skylake X server UPI uncore PMU:

       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 QPI 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].

       i      Invert  the  meaning of the threshold or edge filter. If set, the event counts when
              strictly less than N occurrences occur per cycle if threshold is  set  to  N.  When
              invert  is  set,  then  threshold  must be set to non-zero value. If set, the event
              counts when the event transitions from occurring to not  occurring  (falling  edge)
              when edge detection is set. This is a boolean modifier

BASIC_HDR_MATCH events

       The  library  also supports the special RXL_BASIC_HDR_MATCH and TXL_BASIC_HDR_MATCH opcode
       matcher events. These events have a lot more filters available in the  form  of  either  a
       modifier  (listed  below)  or  specific  umasks.  The following modifiers are available in
       additional to the standard listed above:

       rcsnid Specify a RCS Node identifier as an integer in the range [0-15]. Default: 0

       dnid   Specify a destination Node identifier as an integer in the range [0-15]. Default: 0

AUTHORS

       Stephane Eranian <eranian@gmail.com>

                                          January, 2018                                 LIBPFM(3)