Em Sat, Jan 30, 2016 at 09:06:51AM -0800, Andi Kleen escreveu: > From: Andi Kleen <a...@linux.intel.com> > > Move the running/noise printing into printout to avoid > duplicated code in the callers. > > v2: Merged with other patches. Remove unnecessary hunk. > Readd hunk that ended in earlier patch. > v3: Fix noise/running output in CSV mode > v4: Merge with later patch that also moves not supported printing. > Acked-by: Jiri Olsa <jo...@kernel.org>
So, the description makes it look like this is just elliminating code duplication, but then, before we had: [acme@jouet linux]$ perf.old stat -I 500 -e instructions,cycles sleep 1 # time counts unit events 0.500164711 548,376 instructions # 0.72 insn per cycle 0.500164711 756,872 cycles 1.000405470 <not counted> instructions 1.000405470 <not counted> cycles 1.000690913 156,623 instructions # 0.48 insn per cycle 1.000690913 226,630 cycles [acme@jouet linux]$ And now we have instead: [acme@jouet linux]$ perf stat -I 500 -e instructions,cycles sleep 1 # time counts unit events 0.500173751 555,962 instructions # 0.77 insn per cycle 0.500173751 722,964 cycles 1.000382613 0 instructions # 0.00 insn per cycle 1.000382613 0 cycles 1.001157068 154,765 instructions # 0.49 insn per cycle 1.001157068 223,609 cycles [acme@jouet linux]$ So there is a change in behaviour. - Arnaldo