libpfm_intel_hswep_unc_imc(3) — Linux manual page

NAME \| SYNOPSIS \| DESCRIPTION \| MODIFIERS \| AUTHORS \| COLOPHON

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

NAME top

       libpfm_intel_hswep_unc_imc - support for Intel Haswell-EP
       Integrated Memory Controller (IMC)  uncore PMU

SYNOPSIS top

       #include <perfmon/pfmlib.h>

       PMU name: hswep_unc_imc[0-7]
       PMU desc: Intel Haswell-EP IMC uncore PMU

DESCRIPTION top

       The library supports the Intel Haswell Integrated Memory
       Controller (IMC) uncore PMU.  This PMU model only exists on
       Haswell model 63.

MODIFIERS top

       The following modifiers are supported on Intel Haswell C-Box
       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 IMC 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 perfmon2-libpfm4⟩ on
       2025-08-11.  (At that time, the date of the most recent commit
       that was found in the repository was 2025-06-29.)  If you discover
       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)