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authorIngo Molnar <mingo@elte.hu>2011-04-27 13:50:47 +0200
committerIngo Molnar <mingo@elte.hu>2011-04-26 21:03:16 +0200
commitc6264deff7ea6125492b442edad885e5429679af (patch)
tree8533d8e10cadd0eb31518a514486c561f004115b /Kconfig
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perf stat: Add -d/--detailed flag to run with a lot of events
Add the new -d/--detailed flag, which generates a pretty detailed event list: Performance counter stats for './hackbench 10' (10 runs): 1514.287888 task-clock # 10.897 CPUs utilized ( +- 3.05% ) 39,698 context-switches # 0.026 M/sec ( +- 12.19% ) 8,147 CPU-migrations # 0.005 M/sec ( +- 16.55% ) 17,918 page-faults # 0.012 M/sec ( +- 0.37% ) 2,944,504,050 cycles # 1.944 GHz ( +- 3.89% ) (32.60%) 1,043,971,283 stalled-cycles # 35.45% of all cycles are idle ( +- 5.22% ) (44.48%) 1,655,906,768 instructions # 0.56 insns per cycle # 0.63 stalled cycles per insn ( +- 1.95% ) (55.09%) 338,832,373 branches # 223.757 M/sec ( +- 1.96% ) (64.47%) 3,892,416 branch-misses # 1.15% of all branches ( +- 5.49% ) (73.12%) 606,410,482 L1-dcache-loads # 400.459 M/sec ( +- 1.29% ) (71.21%) 31,204,395 L1-dcache-load-misses # 5.15% of all L1-dcache hits ( +- 3.04% ) (60.43%) 3,922,751 LLC-loads # 2.590 M/sec ( +- 6.80% ) (46.87%) 5,037,288 LLC-load-misses # 3.327 M/sec ( +- 3.56% ) (13.00%) 0.138966828 seconds time elapsed ( +- 4.11% ) This can be used "at a glance" for narrower analysis. -d can also be used in addition to other -e events, to further expand an event list. Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/n/tip-cxs98quixs3qyvdqx3goojc4@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
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