)]}'
{
  "commit": "ee6e1a3ff77a41eff5a606a5aa8c46bf8b571a13",
  "tree": "287eb158c2214b1ae7d77677bbaebe7f1f099234",
  "parents": [
    "92c6061b5cc214fb7863c1af11cb8581ecb97769"
  ],
  "author": {
    "name": "Dmitriy Vyukov",
    "email": "dvyukov@google.com",
    "time": "Mon Jul 18 12:35:55 2011 -0400"
  },
  "committer": {
    "name": "Russ Cox",
    "email": "rsc@golang.org",
    "time": "Mon Jul 18 12:35:55 2011 -0400"
  },
  "message": "sync: add fast paths to WaitGroup\nbenchmark                                        old ns/op    new ns/op    delta\nBenchmarkWaitGroupUncontended                        93.50        33.60  -64.06%\nBenchmarkWaitGroupUncontended-2                      44.30        16.90  -61.85%\nBenchmarkWaitGroupUncontended-4                      21.80         8.47  -61.15%\nBenchmarkWaitGroupUncontended-8                      12.10         4.86  -59.83%\nBenchmarkWaitGroupUncontended-16                      7.38         3.35  -54.61%\nBenchmarkWaitGroupAddDone                            58.40        33.70  -42.29%\nBenchmarkWaitGroupAddDone-2                         293.00        85.80  -70.72%\nBenchmarkWaitGroupAddDone-4                         243.00        51.10  -78.97%\nBenchmarkWaitGroupAddDone-8                         236.00        52.20  -77.88%\nBenchmarkWaitGroupAddDone-16                        215.00        43.30  -79.86%\nBenchmarkWaitGroupAddDoneWork                       826.00       794.00   -3.87%\nBenchmarkWaitGroupAddDoneWork-2                     450.00       424.00   -5.78%\nBenchmarkWaitGroupAddDoneWork-4                     277.00       220.00  -20.58%\nBenchmarkWaitGroupAddDoneWork-8                     440.00       116.00  -73.64%\nBenchmarkWaitGroupAddDoneWork-16                    569.00        66.50  -88.31%\nBenchmarkWaitGroupWait                               29.00         8.04  -72.28%\nBenchmarkWaitGroupWait-2                             74.10         4.15  -94.40%\nBenchmarkWaitGroupWait-4                            117.00         2.30  -98.03%\nBenchmarkWaitGroupWait-8                            111.00         1.31  -98.82%\nBenchmarkWaitGroupWait-16                           104.00         1.27  -98.78%\nBenchmarkWaitGroupWaitWork                          802.00       792.00   -1.25%\nBenchmarkWaitGroupWaitWork-2                        411.00       401.00   -2.43%\nBenchmarkWaitGroupWaitWork-4                        210.00       199.00   -5.24%\nBenchmarkWaitGroupWaitWork-8                        206.00       105.00  -49.03%\nBenchmarkWaitGroupWaitWork-16                       334.00        54.40  -83.71%\n\nR\u003drsc\nCC\u003dgolang-dev\nhttps://golang.org/cl/4672050\n",
  "tree_diff": [
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