Add byte/string equality check benchmark

This commit is contained in:
Fabian Reinartz 2016-12-15 12:15:54 +01:00
parent b2f1db5666
commit 205edd2da9

View File

@ -1,6 +1,7 @@
package test
import (
"bytes"
"testing"
"github.com/fabxc/tsdb"
@ -52,3 +53,77 @@ func BenchmarkLabelSetAccess(b *testing.B) {
_ = v
}
func BenchmarkStringBytesEquals(b *testing.B) {
cases := []struct {
name string
a, b string
}{
{
name: "equal",
a: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,359",
b: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,359",
},
{
name: "1-flip-end",
a: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,359",
b: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,353",
},
{
name: "1-flip-middle",
a: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,359",
b: "sdfn492cn9xwm0ws8r,4932x98f,uj504cxf594802h875hgzz0h3586x8xz,359",
},
{
name: "1-flip-start",
a: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,359",
b: "adfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,359",
},
{
name: "different-length",
a: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,359",
b: "sdfn492cn9xwm0ws8r,4932x98f,uj594cxf594802h875hgzz0h3586x8xz,35",
},
}
for _, c := range cases {
b.Run(c.name+"-strings", func(b *testing.B) {
as, bs := c.a, c.b
b.SetBytes(int64(len(as)))
var r bool
for i := 0; i < b.N; i++ {
r = as == bs
}
_ = r
})
b.Run(c.name+"-bytes", func(b *testing.B) {
ab, bb := []byte(c.a), []byte(c.b)
b.SetBytes(int64(len(ab)))
var r bool
for i := 0; i < b.N; i++ {
r = bytes.Equal(ab, bb)
}
_ = r
})
b.Run(c.name+"-bytes-length-check", func(b *testing.B) {
ab, bb := []byte(c.a), []byte(c.b)
b.SetBytes(int64(len(ab)))
var r bool
for i := 0; i < b.N; i++ {
if len(ab) != len(bb) {
continue
}
r = bytes.Equal(ab, bb)
}
_ = r
})
}
}