Messages in this thread |  | | From | Stephane Eranian <> | Subject | [PATCH 0/2] perf stat: add per processor socket count aggregation | Date | Wed, 6 Feb 2013 15:46:00 +0100 |
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This patch adds per-processor socket count aggregation for system-wide mode measurements. This is a useful mode to detect imbalance between sockets for uniform workloads.
To enable this mode, use --aggr-socket in addition to -a. (system-wide). This mode can be combined with interval printing.
The output includes the socket number and the number of online processors on that socket. This is useful to gauge the amount of aggregation.
# ./perf stat -I 1000 -a --aggr-socket -e cycles sleep 2 # time socket cpus counts events 1.000097680 S0 4 5,788,785 cycles 2.000379943 S0 4 27,361,546 cycles 2.001167808 S0 4 818,275 cycles
Signed-off-by: Stephane Eranian <eranian@google.com>
Stephane Eranian (2): perf tools: add cpu_map processor socket level functions perf stat: add per processor socket count aggregation
tools/perf/builtin-stat.c | 126 +++++++++++++++++++++++++++++++++++++++++---- tools/perf/util/cpumap.c | 54 +++++++++++++++++++ tools/perf/util/cpumap.h | 9 ++++ 3 files changed, 178 insertions(+), 11 deletions(-)
-- 1.7.9.5
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