bench_test.go

package log

import (
	"testing"

	stdlog "log"
)

func BenchmarkLog(b *testing.B) {
	HumanReadable = false
	for n := 0; n < b.N; n++ {
		Debug("test", nil)
	}
}

func BenchmarkStdLog(b *testing.B) {
	for n := 0; n < b.N; n++ {
		stdlog.Println("test test test test test test test test test test test test test test test")
	}
}

commands

go test -run=^$ -bench=. -cpuprofile=cpu.out

go tool pprof log.test cpu.out

from inside pprof - run 'pdf' command
then open output001.pdf