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libpfm_intel_rapl(3) — Linux manual page

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

NAME        top

       libpfm_intel_rapl - support for Intel RAPL PMU

SYNOPSIS        top

#include <perfmon/pfmlib.h>PMU name: raplPMU desc: Intel RAPL (Intel SandyBridge, IvyBridge, Haswell)

DESCRIPTION        top

       The library supports the Intel Running Average Power Limit (RAPL)       energy consumption counters. This is a socket-level set of       counters which reports energy consumption in Joules. There are up       to 3 counters each measuring only one event. The following events       are defined:RAPL_ENERGY_CORES              On all processors, the event reports the number of Joules              consumed by all cores.               On all processors,RAPL_ENERGYC_PKG              On all processors, th event reports the number of Joules              consumed by all the cores and Last Level cache (L3).RAPL_ENERGY_DRAM              On server processors, the event reports the number of              Joules consumed n by the DRAM controller.              By construction, the events are socket-level and can only              be measured in system-wide mode. It is necessary and              sufficient to measure only one CPU per socket to get              meaningful results.

MODIFIERS        top

       The PMU does not support any modifiers.

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                              November, 2013LIBPFM(3)

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