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libpfm_intel_snbep_unc_ha(3) — Linux manual page

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

NAME        top

       libpfm_intel_snbep_unc_ha - support for Intel Sandy Bridge-EP Home       Agent (HA) uncore PMU

SYNOPSIS        top

#include <perfmon/pfmlib.h>PMU name: snbep_unc_haPMU desc: Intel Sandy Bridge-EP HA uncore PMU

DESCRIPTION        top

       The library supports the Intel Sandy Bridge Home Agent (HA) uncore       PMU.  This PMU model only exists on Sandy Bridge model 45. There       is only one Home Agent per processor socket.

MODIFIERS        top

       The following modifiers are supported on Intel Sandy Bridge C-Box       uncore PMU:iInvert the meaning of the event. The counter will now count              HA cycles in which the event isnotoccurring. This is a              boolean modifiereEnable 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.tSet 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 [0:255].

AUTHORS        top

       Stephane Eranian <eranian@gmail.com>

COLOPHON        top

       This page is part of theperfmon2 (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 isnot part of the original manual page), send a       mail to man-pages@man7.org                               August, 2012LIBPFM(3)

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