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Mikio Hara authored
Fixes #5199. Benchmark results on freebsd/amd64 (virtual machine): benchmark old ns/op new ns/op delta BenchmarkTCP4OneShot-2 184566 187164 +1.41% BenchmarkTCP4OneShotTimeout-2 215558 187722 -12.91% BenchmarkTCP4Persistent-2 59686 41294 -30.81% BenchmarkTCP4PersistentTimeout-2 60692 39974 -34.14% BenchmarkTCP6OneShot-2 226595 223688 -1.28% BenchmarkTCP6OneShotTimeout-2 253144 225161 -11.05% BenchmarkTCP6Persistent-2 69157 55605 -19.60% BenchmarkTCP6PersistentTimeout-2 70426 53805 -23.60% BenchmarkTCP4ConcurrentReadWrite-2 53878 56087 +4.10% BenchmarkTCP6ConcurrentReadWrite-2 66538 68190 +2.48% benchmark old allocs new allocs delta BenchmarkTCP4OneShot-2 39 36 -7.69% BenchmarkTCP4OneShotTimeout-2 42 36 -14.29% BenchmarkTCP4Persistent-2 1 0 -100.00% BenchmarkTCP4PersistentTimeout-2 1 0 -100.00% BenchmarkTCP6OneShot-2 41 36 -12.20% BenchmarkTCP6OneShotTimeout-2 43 36 -16.28% BenchmarkTCP6Persistent-2 1 0 -100.00% BenchmarkTCP6PersistentTimeout-2 1 0 -100.00% BenchmarkTCP4ConcurrentReadWrite-2 0 0 n/a% BenchmarkTCP6ConcurrentReadWrite-2 0 0 n/a% benchmark old bytes new bytes delta BenchmarkTCP4OneShot-2 3084 2544 -17.51% BenchmarkTCP4OneShotTimeout-2 3129 2519 -19.50% BenchmarkTCP4Persistent-2 30 0 -100.00% BenchmarkTCP4PersistentTimeout-2 31 0 -100.00% BenchmarkTCP6OneShot-2 3297 2660 -19.32% BenchmarkTCP6OneShotTimeout-2 3306 2655 -19.69% BenchmarkTCP6Persistent-2 31 0 -100.00% BenchmarkTCP6PersistentTimeout-2 29 0 -100.00% BenchmarkTCP4ConcurrentReadWrite-2 2 0 -100.00% BenchmarkTCP6ConcurrentReadWrite-2 7 0 -100.00% R=dvyukov, minux.ma, dave, bradfitz, alex.brainman CC=golang-dev https://golang.org/cl/8264043
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