log_test.go

package temp

import (
	"fmt"
	"github.com/rs/zerolog"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
	"io/ioutil"

	"testing"
)

func concurrency() []int {
	return []int{1, 2, 4, 8}
}

func Benchmark_ZapStdout(b *testing.B) {
	for _, N := range concurrency() {
		encoder := zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig())
		core := zapcore.NewCore(encoder, zapcore.Lock(zapcore.AddSync(ioutil.Discard)), zap.InfoLevel)
		logger := zap.New(core)
		b.Run(fmt.Sprintf("size %d", N), func(b *testing.B) {
			b.SetParallelism(N)
			b.RunParallel(func(pb *testing.PB) {
				for pb.Next() {
					logger.Info("test")
				}
			})
		})
	}
}

func Benchmark_ZerologStdout(b *testing.B) {
	for _, N := range concurrency() {
		logger := zerolog.New(zerolog.SyncWriter(ioutil.Discard))
		b.Run(fmt.Sprintf("size %d", N), func(b *testing.B) {
			b.SetParallelism(N)
			b.RunParallel(func(pb *testing.PB) {
				for pb.Next() {
					logger.Info().Msg("test")
				}
			})
		})
	}
}

result.md

Benchmark result:

Benchmark_ZapStdout
Benchmark_ZapStdout/size_1
Benchmark_ZapStdout/size_1-8         	 7128848	       241 ns/op
Benchmark_ZapStdout/size_2
Benchmark_ZapStdout/size_2-8         	 4318132	       239 ns/op
Benchmark_ZapStdout/size_4
Benchmark_ZapStdout/size_4-8         	 5186737	       205 ns/op
Benchmark_ZapStdout/size_8
Benchmark_ZapStdout/size_8-8         	 5835738	       228 ns/op
Benchmark_ZerologStdout
Benchmark_ZerologStdout/size_1
Benchmark_ZerologStdout/size_1-8     	 8203591	       138 ns/op
Benchmark_ZerologStdout/size_2
Benchmark_ZerologStdout/size_2-8     	 8892949	       132 ns/op
Benchmark_ZerologStdout/size_4
Benchmark_ZerologStdout/size_4-8     	 8186414	       147 ns/op
Benchmark_ZerologStdout/size_8
Benchmark_ZerologStdout/size_8-8     	 7504269	       155 ns/op
PASS

Benchmark of Log4j