Messages in this thread |  | | Date | Thu, 18 Feb 2016 14:00:35 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 2/6] perf, tools, stat: Implement CSV metrics output |
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Em Wed, Feb 17, 2016 at 02:44:01PM -0800, Andi Kleen escreveu: > From: Andi Kleen <ak@linux.intel.com> > > Now support CSV output for metrics. With the new output callbacks > this is relatively straight forward by creating new callbacks. > > This allows to easily plot metrics from CSV files. > > The new line callback needs to know the number of fields to skip them > correctly > > Example output before: > > % perf stat -x, true > 0.200687,,task-clock,200687,100.00 > 0,,context-switches,200687,100.00 > 0,,cpu-migrations,200687,100.00 > 40,,page-faults,200687,100.00 > 730871,,cycles,203601,100.00 > 551056,,stalled-cycles-frontend,203601,100.00 > <not supported>,,stalled-cycles-backend,0,100.00 > 385523,,instructions,203601,100.00 > 78028,,branches,203601,100.00 > 3946,,branch-misses,203601,100.00 > > After: > > % perf stat -x, true > .502457,,task-clock,502457,100.00,0.485,CPUs utilized > 0,,context-switches,502457,100.00,0.000,K/sec > 0,,cpu-migrations,502457,100.00,0.000,K/sec > 45,,page-faults,502457,100.00,0.090,M/sec > 644692,,cycles,509102,100.00,1.283,GHz > 423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle > <not supported>,,stalled-cycles-backend,0,100.00,,,, > 492701,,instructions,509102,100.00,0.76,insn per cycle > ,,,,,0.86,stalled cycles per insn > 97767,,branches,509102,100.00,194.578,M/sec > 4788,,branch-misses,509102,100.00,4.90,of all branches
Testing here I noticed this new line with just commas:
[root@jouet ~]# perf stat -x, usleep 1 0.268163,,task-clock,268163,100.00,0.484,CPUs utilized 1,,context-switches,268163,100.00,0.004,M/sec 0,,cpu-migrations,268163,100.00,0.000,K/sec 52,,page-faults,268163,100.00,0.194,M/sec 815922,,cycles,270746,100.00,3.043,GHz <not supported>,,stalled-cycles-frontend,0,100.00,,,, <not supported>,,stalled-cycles-backend,0,100.00,,,, 680198,,instructions,270746,100.00,0.83,insn per cycle ,,,,,,,, 136401,,branches,270746,100.00,508.650,M/sec 6995,,branch-misses,270746,100.00,5.13,of all branches [root@jouet ~]#
Where before it wasn't there:
cat /tmp/before 0.282628,,task-clock,282628,100.00 1,,context-switches,282628,100.00 0,,cpu-migrations,282628,100.00 52,,page-faults,282628,100.00 861213,,cycles,285354,100.00 <not supported>,,stalled-cycles-frontend,0,100.00 <not supported>,,stalled-cycles-backend,0,100.00 686082,,instructions,285354,100.00 137846,,branches,285354,100.00 7142,,branch-misses,285354,100.00
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