libpfm_intel_rapl(3) — Linux manual page
LIBPFM(3) Linux Programmer's Manual LIBPFM(3)
NAME
libpfm_intel_rapl - support for Intel RAPL PMU
SYNOPSIS
#include <perfmon/pfmlib.h>
PMU name: rapl
PMU desc: Intel RAPL (Intel SandyBridge, IvyBridge, Haswell)
DESCRIPTION
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
The PMU does not support any modifiers.
AUTHORS
Stephane Eranian <eranian@gmail.com>
COLOPHON
This page is part of the perfmon2 (a performance monitoring
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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
2024-06-14. (At that time, the date of the most recent commit
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