$ go get github.com/bluele/psort
$ go test -bench . -benchmem
BenchmarkSort-4 1000 2714116 ns/op 64 B/op 2 allocs/op
BenchmarkPSort-4 5000 302611 ns/op 64 B/op 2 allocs/op
PASS
ok github.com/bluele/psort 19.015s
Jun Kimura