NAME | SYNOPSIS | DESCRIPTION | MODIFIERS | AUTHORS | COLOPHON

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

NAME         top

       libpfm_intel_hswep_unc_qpi  - support for Intel Haswell-EP QPI uncore
       PMU

SYNOPSIS         top

       #include <perfmon/pfmlib.h>
       PMU name: hswep_unc_qpi0, hswep_unc_qpi1
       PMU desc: Intel Haswell-EP QPI uncore PMU

DESCRIPTION         top

       The library supports the Intel Haswell Power QPI uncore PMU.  This
       PMU model only exists on Haswell model 63.

MODIFIERS         top

       The following modifiers are supported on Haswell Bridge QPI 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

AUTHORS         top

       Stephane Eranian <eranian@gmail.com>

COLOPHON         top

       This page is part of the perfmon2 (a performance monitoring library)
       project.  Information about the project can be found at 
       ⟨http://perfmon2.sourceforge.net/⟩.  If you have a bug report for this
       manual page, send it to perfmon2-devel@lists.sourceforge.net.  This
       page was obtained from the project's upstream Git repository 
       ⟨git://git.code.sf.net/p/perfmon2/libpfm4⟩ on 2017-07-05.  If you dis‐
       cover any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org
                                 May , 2015                        LIBPFM(3)