Benchmark result for Go 1.9 concurrency map (sync.Map).
lnquy@rain:~/workspace/projects/go/src/github.com/lnquy/go19-map-bench$ go test -bench=. -cpu=1
goos: linux
goarch: amd64
pkg: github.com/lnquy/go19-map-bench
BenchmarkNMapIntInt_Write 100000000 16.2 ns/op
BenchmarkNMapIntInt_Read 100000000 15.9 ns/op
BenchmarkNMapStrInt_Write 10000000 242 ns/op
BenchmarkNMapStrInt_Read 10000000 242 ns/op
BenchmarkNMapIntStr_Write 10000000 206 ns/op
BenchmarkNMapIntStr_Read 100000000 17.7 ns/op
BenchmarkNMapStrStr_Write 5000000 251 ns/op
BenchmarkNMapStrStr_Read 10000000 250 ns/op
BenchmarkCMap_Write 10000000 120 ns/op
BenchmarkCMap_Read 30000000 41.3 ns/op
PASS
ok github.com/lnquy/go19-map-bench 19.477s
lnquy@rain:~/workspace/projects/go/src/github.com/lnquy/go19-map-bench$ go run main.go
Normal map executed in 323.796539ms
Normal map size: 1000000
Sync map 1.9 executed in 726.494685ms
Sync map size: 1000000