LIBPFM

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>