| Message ID | 1306398855.2207.156.camel@rui (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
* Zhang Rui <rui.zhang@intel.com> wrote: > Introduce four new perf software events > > PERF_COUNT_SW_PKG_ENERGY > PERF_COUNT_SW_CORE_ENERGY > PERF_COUNT_SW_UNCORE_ENERGY > and > PERF_COUNT_SW_DRAM_ENERGY > > To use it, users can run > perf stat -e pkg-energy foo > to get the package energy consumption when running foo. That's very interesting - being able to profile workloads by power/energy use looks like a *very* powerful feature. Are you allowed to show us some sample output of the data? What's the granularity of this info? Say what is the output of: perf stat -e pkg-energy -e core-energy -e uncore-energy -e dram-energy -a sleep 10 ? Also, have you tried something like: perf record -a -e pkg-energy sleep 60 perf report To see where most of the energy is used within a 1 minute interval? Also, conceptually these are really hardware events, right? Thanks, Ingo
Index: linux-2.6/tools/perf/design.txt =================================================================== --- linux-2.6.orig/tools/perf/design.txt +++ linux-2.6/tools/perf/design.txt @@ -139,6 +139,10 @@ enum sw_event_ids { PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, PERF_COUNT_SW_ALIGNMENT_FAULTS = 7, PERF_COUNT_SW_EMULATION_FAULTS = 8, + PERF_COUNT_SW_PKG_ENERGY = 9, + PERF_COUNT_SW_CORE_ENERGY = 10, + PERF_COUNT_SW_UNCORE_ENERGY = 11, + PERF_COUNT_SW_DRAM_ENERGY = 12, }; Counters of the type PERF_TYPE_TRACEPOINT are available when the ftrace event Index: linux-2.6/tools/perf/util/parse-events.c =================================================================== --- linux-2.6.orig/tools/perf/util/parse-events.c +++ linux-2.6/tools/perf/util/parse-events.c @@ -50,6 +50,10 @@ static struct event_symbol event_symbols { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" }, { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" }, { CSW(EMULATION_FAULTS), "emulation-faults", "" }, + { CSW(PKG_ENERGY), "pkg-energy", "" }, + { CSW(CORE_ENERGY), "core-energy", "" }, + { CSW(UNCORE_ENERGY), "uncore-energy", "" }, + { CSW(DRAM_ENERGY), "dram-energy", "" }, }; #define __PERF_EVENT_FIELD(config, name) \ @@ -82,6 +86,10 @@ static const char *sw_event_names[PERF_C "major-faults", "alignment-faults", "emulation-faults", + "package-energy-consumption", + "core-energy-consumption", + "uncore-energy-consumption", + "dram-energy-consumption", }; #define MAX_ALIASES 8
Introduce four new perf software events PERF_COUNT_SW_PKG_ENERGY PERF_COUNT_SW_CORE_ENERGY PERF_COUNT_SW_UNCORE_ENERGY and PERF_COUNT_SW_DRAM_ENERGY To use it, users can run perf stat -e pkg-energy foo to get the package energy consumption when running foo. Signed-off-by: Zhang Rui <rui.zhang@intel.com> --- tools/perf/design.txt | 4 ++++ tools/perf/util/parse-events.c | 8 ++++++++ 2 files changed, 12 insertions(+)