1LIBPFM(3)                  Linux Programmer's Manual                 LIBPFM(3)
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NAME

6       libpfm_intel_bdx_unc_irp  -  support  for  Intel  Broadwell  Server IRP
7       uncore PMU
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SYNOPSIS

10       #include <perfmon/pfmlib.h>
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12       PMU name: bdx_unc_irp
13       PMU desc: Intel Broadwell Server IRP uncore PMU
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DESCRIPTION

17       The library supports the Intel Broadwell  Server  IRP  (IIO  coherency)
18       uncore  PMU .  This PMU model only exists various Broadwell server mod‐
19       els (79, 86).
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MODIFIERS

23       The following modifiers are supported on  Intel  Broadwell  server  IRP
24       uncore PMU:
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26       e      Enable  edge  detection,  i.e., count only when there is a state
27              transition from no occurrence of  the  event  to  at  least  one
28              occurrence. This modifier must be combined with a threshold mod‐
29              ifier (t) with a value greater or equal to one.  This is a bool‐
30              ean modifier.
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32       t      Set  the  threshold  value.  When  set  to a non-zero value, the
33              counter counts the number of  cycles  in  which  the  number  of
34              occurrences  of  the event is greater or equal to the threshold.
35              This is an integer modifier with values in the range [0:255].
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37       i      Invert the meaning of the threshold or edge filter. If set,  the
38              event  counts  when  strictly  less than N occurrences occur per
39              cycle if threshold is set to N. When invert is set, then thresh‐
40              old must be set to non-zero value. If set, the event counts when
41              the event transitions from occurring to not  occurring  (falling
42              edge) when edge detection is set. This is a boolean modifier
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AUTHORS

46       Stephane Eranian <eranian@gmail.com>
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50                                  June, 2017                         LIBPFM(3)