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Benchmark value stored as interface vs struct
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| package benchamarking | |
| import ( | |
| "testing" | |
| ) | |
| type MyStruct struct { | |
| Value int | |
| } | |
| func (ms MyStruct) GetValue() int { | |
| return ms.Value | |
| } | |
| type MyInterface interface { | |
| GetValue() int | |
| } | |
| func BenchmarkInterface(b *testing.B) { | |
| var data []MyInterface | |
| for i := 0; i < 1000000; i++ { | |
| data = append(data, MyStruct{Value: i}) | |
| } | |
| for i := 0; i < b.N; i++ { | |
| for _, v := range data { | |
| _ = v.GetValue() | |
| } | |
| } | |
| } | |
| func BenchmarkConcrete(b *testing.B) { | |
| var data []MyStruct | |
| for i := 0; i < 1000000; i++ { | |
| data = append(data, MyStruct{Value: i}) | |
| } | |
| for i := 0; i < b.N; i++ { | |
| for _, v := range data { | |
| _ = v.Value | |
| } | |
| } | |
| } | |
| /* -- To run the test | |
| # go test -bench=. | |
| */ |
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Result :