mirror of
https://github.com/golang/go
synced 2024-11-23 07:50:05 -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.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This benchmark tests JSON encoding and decoding performance.
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package go1
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import (
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"bytes"
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"compress/bzip2"
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"encoding/base64"
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"encoding/json"
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"io"
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"io/ioutil"
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"testing"
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)
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var (
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jsonbytes = makeJsonBytes()
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jsondata = makeJsonData()
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)
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func makeJsonBytes() []byte {
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var r io.Reader
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r = bytes.NewReader(bytes.Replace(jsonbz2_base64, []byte{'\n'}, nil, -1))
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r = base64.NewDecoder(base64.StdEncoding, r)
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r = bzip2.NewReader(r)
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b, err := ioutil.ReadAll(r)
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if err != nil {
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panic(err)
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}
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return b
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}
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func makeJsonData() JSONResponse {
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var v JSONResponse
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if err := json.Unmarshal(jsonbytes, &v); err != nil {
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panic(err)
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}
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return v
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}
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type JSONResponse struct {
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Tree *JSONNode `json:"tree"`
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Username string `json:"username"`
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}
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type JSONNode struct {
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Name string `json:"name"`
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Kids []*JSONNode `json:"kids"`
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CLWeight float64 `json:"cl_weight"`
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Touches int `json:"touches"`
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MinT int64 `json:"min_t"`
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MaxT int64 `json:"max_t"`
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MeanT int64 `json:"mean_t"`
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}
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func jsondec() {
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var r JSONResponse
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if err := json.Unmarshal(jsonbytes, &r); err != nil {
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panic(err)
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}
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_ = r
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}
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func jsonenc() {
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buf, err := json.Marshal(&jsondata)
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if err != nil {
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panic(err)
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}
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_ = buf
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}
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func BenchmarkJSONEncode(b *testing.B) {
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b.SetBytes(int64(len(jsonbytes)))
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for i := 0; i < b.N; i++ {
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jsonenc()
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}
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}
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func BenchmarkJSONDecode(b *testing.B) {
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b.SetBytes(int64(len(jsonbytes)))
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for i := 0; i < b.N; i++ {
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jsondec()
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}
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}
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