benchmarking

gistfile1.txt

package main

import (
	"reflect"
	"testing"

	"github.com/aws/aws-sdk-go/aws/request"
)

func BenchmarkFooF(b *testing.B) {
	for i := 0; i < b.N; i++ {
		f()
	}
}

func BenchmarkFooG(b *testing.B) {
	for i := 0; i < b.N; i++ {
		g()
	}
}

func f() {
	r := &request.Request{
		Params: &struct{}{},
	}
	if !reflect.ValueOf(r.Params).IsNil() { // verifies that r.Params is not nil
		_ = reflect.ValueOf(r.Params).Elem()
	}
}

func g() {
	r := &request.Request{
		Params: &struct{}{},
	}
	of := reflect.ValueOf(r.Params)
	if !of.IsNil() { // verifies that r.Params is not nil
		_ = of.Elem()
	}

}

go test -benchmem -bench=. ./...
goos: darwin
goarch: amd64

cpu: Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
BenchmarkFooF-16 45211039 24.32 ns/op 0 B/op 0 allocs/op
BenchmarkFooG-16 203895636 6.264 ns/op 0 B/op 0 allocs/op
PASS
ok 3.791s