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authorIngo Molnar <[email protected]>2011-04-27 13:25:24 +0200
committerIngo Molnar <[email protected]>2011-04-26 20:32:24 +0200
commit8bb6c79f24e66538f606076915e918242c02ec7c (patch)
tree44196658307709aabd70ee2ab7ee6187e3f5b190 /tools/perf/scripts/python/Perf-Trace-Util/lib
parentc78df6c1d49b5d798f1579141e3a12be7c325d1e (diff)
perf stat: Print out miss/hit ratio for L1 data-cache events
Print out this kind of l1-dcache-misses percentage: Performance counter stats for './bw_tcp localhost': 29,956,262,201 cycles # 3.002 GHz (scaled from 85.14%) 8,255,209,558 stalled-cycles # 27.56% of all cycles are idle (scaled from 86.56%) 1,206,130,308 l1-dcache-misses # 40.49% of all L1-dcache hits (scaled from 86.30%) 2,978,756,779 l1-dcache-refs # 298.512 M/sec (scaled from 70.02%) 8,861,956,159 instructions # 0.30 insns per cycle # 0.93 stalled cycles per insn (scaled from 84.27%) 1,644,306,068 branches # 164.782 M/sec (scaled from 86.43%) 74,778,443 branch-misses # 4.55% of all branches (scaled from 70.69%) 9978.695711 task-clock # 0.693 CPUs utilized 14.404347983 seconds time elapsed And color the result depending on the severity of cache-trashing. Acked-by: Peter Zijlstra <[email protected]> Acked-by Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib')
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