libpfm_intel_icx_unc_pcu(3) — Linux manual page

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

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

NAME top

       libpfm_intel_icx_unc_pcu - support for Intel IcelakeX Server PCU
       uncore PMU

SYNOPSIS top

       #include <perfmon/pfmlib.h>

       PMU name: icx_unc_pcu
       PMU desc: Intel IcelakeX PCU uncore PMU

DESCRIPTION top

       The library supports the Intel IcelakeX PCU (Power Control Unit)
       uncore PMU. There is one PCU per system.  Each PCU PMU implements
       4 generic counters.

MODIFIERS top

       The following modifiers are supported on Intel IcelakeX PCU
       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 PCU clockticks 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 [0:63].

       i      Invert the threshold (t) test from strictly greater than
              to less or equal to. This is a boolean modifier.

       occ_i  Invert the threshold (t) for occupancy events
              POWER_STATE_OCCUPANY test from strictly greater than to
              less or equal to. This is a boolean modifier.

       occ_e  Enable edge detection for occupancy events
              POWER_STATE_OCCUPANCY, 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.

AUTHORS top

              Stephane Eranian <[email protected]>

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
       [email protected].  This page was obtained
       from the project's upstream Git repository
       ⟨git://git.code.sf.net/p/perfmon2/libpfm4 perfmon2-libpfm4⟩ on
       2024-06-14.  (At that time, the date of the most recent commit
       that was found in the repository was 2024-04-24.)  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 [email protected]

                             November, 2023                    LIBPFM(3)