NAME

       libpfm_intel_skx_unc_ubo - support for Intel Skylake X Server IIO uncore PMU

SYNOPSIS

       #include <perfmon/pfmlib.h>

       PMU name: skx_unc_iio[0-5]
       PMU desc: Intel Skylake X Server IIO uncore PMU

DESCRIPTION

       The  library  supports  the  Intel  Skylake  X  server IIO uncore PMU. The IIO PMU is used to analyze I/O
       traffic from the PCIe controllers.

MODIFIERS

       The following modifiers are supported on Intel Skylake X server IIO 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 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 [0:15].

       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

Filters

       Events  UNC_IO_COMP_BUF_INSERTS,  UNC_IO_DATA_REQ_BY_CPU,  UNC_IO_DATA_REQ_OF_CPU,   support   additional
       filtering  via  a  set of umasks tracking requests completions. They umasks start with a FC_ prefix.  The
       other filter is the port filter and it is hardcoded as umasks for the same events.

AUTHORS

       Stephane Eranian <eranian@gmail.com>

                                                  January, 2018                                        LIBPFM(3)