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>
