fmt.Fprintf & fmt.Fprint when possible #259Description
package testing
import (
"bytes"
"fmt"
"io"
"strings"
"sync"
"testing"
)
func BenchmarkFprint(b *testing.B) {
for i := 0; i < b.N; i++ {
fmt.Fprint(io.Discard, "data")
}
}
func BenchmarkFprintf(b *testing.B) {
for i := 0; i < b.N; i++ {
fmt.Fprintf(io.Discard, "data")
}
}
func BenchmarkCopy(b *testing.B) {
for i := 0; i < b.N; i++ {
io.Copy(io.Discard, strings.NewReader("data"))
}
}
func BenchmarkWrite(b *testing.B) {
data := []byte("data")
for i := 0; i < b.N; i++ {
io.Discard.Write(data)
}
}
func BenchmarkBuffer(b *testing.B) {
buf := bytes.NewBuffer(make([]byte, 0, 32))
for i := 0; i < b.N; i++ {
buf.Write([]byte("data"))
buf.Reset()
}
}
var bufferPool = sync.Pool{
New: func() interface{} {
return bytes.NewBuffer(make([]byte, 0, 32))
},
}
func BenchmarkPooledBuffer(b *testing.B) {
for i := 0; i < b.N; i++ {
buf := bufferPool.Get().(*bytes.Buffer)
buf.Write([]byte("data"))
buf.Reset()
bufferPool.Put(buf)
}
}goos: darwin
goarch: arm64
pkg: github.com/olekukonko/tablewriter/tmp/testing
cpu: Apple M3 Pro
BenchmarkFprint
BenchmarkFprint-12 66543763 17.95 ns/op 0 B/op 0 allocs/op
BenchmarkFprintf
BenchmarkFprintf-12 84729055 15.33 ns/op 0 B/op 0 allocs/op
BenchmarkCopy
BenchmarkCopy-12 67571215 17.11 ns/op 32 B/op 1 allocs/op
BenchmarkWrite
BenchmarkWrite-12 1000000000 1.072 ns/op 0 B/op 0 allocs/op
BenchmarkBuffer
BenchmarkBuffer-12 443786776 2.672 ns/op 0 B/op 0 allocs/op
BenchmarkPooledBuffer
BenchmarkPooledBuffer-12 143791021 8.329 ns/op 0 B/op 0 allocs/op
PASS
ok github.com/olekukonko/tablewriter/tmp/testing 10.043s