mirror of
https://github.com/golang/go
synced 2024-11-18 15:34:53 -07:00
13075ed416
to reduce compile time memory/stack usage. Update #4970 $ go test -c ../test/bench/go1 before: 0.36user 0.07system 0:00.44elapsed 100%CPU (0avgtext+0avgdata 540720maxresident)k 0inputs+19840outputs (0major+56451minor)pagefaults 0swaps after: 0.33user 0.05system 0:00.39elapsed 100%CPU (0avgtext+0avgdata 289936maxresident)k 0inputs+19864outputs (0major+29615minor)pagefaults 0swaps And stack usage is reduced to below 1MiB. R=golang-dev, r, dave CC=golang-dev https://golang.org/cl/7436050
88 lines
1.6 KiB
Go
88 lines
1.6 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// This benchmark tests JSON encoding and decoding performance.
|
|
|
|
package go1
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/bzip2"
|
|
"encoding/base64"
|
|
"encoding/json"
|
|
"io"
|
|
"io/ioutil"
|
|
"testing"
|
|
)
|
|
|
|
var (
|
|
jsonbytes = makeJsonBytes()
|
|
jsondata = makeJsonData()
|
|
)
|
|
|
|
func makeJsonBytes() []byte {
|
|
var r io.Reader
|
|
r = bytes.NewReader(bytes.Replace(jsonbz2_base64, []byte{'\n'}, nil, -1))
|
|
r = base64.NewDecoder(base64.StdEncoding, r)
|
|
r = bzip2.NewReader(r)
|
|
b, err := ioutil.ReadAll(r)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return b
|
|
}
|
|
|
|
func makeJsonData() JSONResponse {
|
|
var v JSONResponse
|
|
if err := json.Unmarshal(jsonbytes, &v); err != nil {
|
|
panic(err)
|
|
}
|
|
return v
|
|
}
|
|
|
|
type JSONResponse struct {
|
|
Tree *JSONNode `json:"tree"`
|
|
Username string `json:"username"`
|
|
}
|
|
|
|
type JSONNode struct {
|
|
Name string `json:"name"`
|
|
Kids []*JSONNode `json:"kids"`
|
|
CLWeight float64 `json:"cl_weight"`
|
|
Touches int `json:"touches"`
|
|
MinT int64 `json:"min_t"`
|
|
MaxT int64 `json:"max_t"`
|
|
MeanT int64 `json:"mean_t"`
|
|
}
|
|
|
|
func jsondec() {
|
|
var r JSONResponse
|
|
if err := json.Unmarshal(jsonbytes, &r); err != nil {
|
|
panic(err)
|
|
}
|
|
_ = r
|
|
}
|
|
|
|
func jsonenc() {
|
|
buf, err := json.Marshal(&jsondata)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
_ = buf
|
|
}
|
|
|
|
func BenchmarkJSONEncode(b *testing.B) {
|
|
b.SetBytes(int64(len(jsonbytes)))
|
|
for i := 0; i < b.N; i++ {
|
|
jsonenc()
|
|
}
|
|
}
|
|
|
|
func BenchmarkJSONDecode(b *testing.B) {
|
|
b.SetBytes(int64(len(jsonbytes)))
|
|
for i := 0; i < b.N; i++ {
|
|
jsondec()
|
|
}
|
|
}
|