)]}'
{
  "commit": "cdce9d738b91e1ec686e4ef6ca46d46e2891e208",
  "tree": "1fd64c4bef114ce44a3c96ad7183fa200bff3d12",
  "parents": [
    "419ab0d6a959f41ec7fde807fe311aaafb05c3be"
  ],
  "author": {
    "name": "Frederic Weisbecker",
    "email": "fweisbec@gmail.com",
    "time": "Sat Sep 12 08:06:14 2009 +0200"
  },
  "committer": {
    "name": "Ingo Molnar",
    "email": "mingo@elte.hu",
    "time": "Sun Sep 13 10:22:43 2009 +0200"
  },
  "message": "perf sched: Add sched latency profiling\n\nAdd the -l --latency option that reports statistics about the\nscheduler latencies.\n\nFor now, the latencies are measured in the following sequence\nscope:\n\n- task A is sleeping (D or S state)\n- task B wakes up A\n         ^\n         |\n         |\n\n   latency timeframe\n\n         |\n         |\n         v\n- task A is scheduled in\n\nStart by recording every scheduler events:\n\n\tperf record -e sched:*\n\nand then fetch the results:\n\n\tperf sched -l\n\n Tasks                     count          total              avg            max\n\nmigration/0                  2             39849            19924           28826\nksoftirqd/0                  7            756383           108054          373014\nmigration/1                  5             45391             9078           10452\nksoftirqd/1                  2            399055           199527          359130\nevents/0                     8           4780110           597513         4500250\nevents/1                     9           6353057           705895         2986012\nkblockd/0                   42          37805097           900121         5077684\n\nThe snapshot are in nanoseconds.\n\n- Count: number of snapshots taken for the given task\n- Total: total latencies in nanosec\n- Avg  : average of latency between wake up and sched in\n- Max  : max snapshot latency\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "756fe62eb0462528ea702d0138827aff83c906c9",
      "old_mode": 33188,
      "old_path": "tools/perf/builtin-sched.c",
      "new_id": "4f9e943181a39ac40387c66c2f3b7db4dec1c6a9",
      "new_mode": 33188,
      "new_path": "tools/perf/builtin-sched.c"
    }
  ]
}