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|
package fastjson
import (
"encoding/json"
"fmt"
"io/ioutil"
"strings"
"testing"
)
func BenchmarkParseRawString(b *testing.B) {
for _, s := range []string{`""`, `"a"`, `"abcd"`, `"abcdefghijk"`, `"qwertyuiopasdfghjklzxcvb"`} {
b.Run(s, func(b *testing.B) {
benchmarkParseRawString(b, s)
})
}
}
func benchmarkParseRawString(b *testing.B, s string) {
b.ReportAllocs()
b.SetBytes(int64(len(s)))
s = s[1:] // skip the opening '"'
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
rs, tail, err := parseRawString(s)
if err != nil {
panic(fmt.Errorf("cannot parse %q: %s", s, err))
}
if rs != s[:len(s)-1] {
panic(fmt.Errorf("invalid string obtained; got %q; want %q", rs, s[:len(s)-1]))
}
if len(tail) > 0 {
panic(fmt.Errorf("non-empty tail got: %q", tail))
}
}
})
}
func BenchmarkParseRawNumber(b *testing.B) {
for _, s := range []string{"1", "1234", "123456", "-1234", "1234567890.1234567", "-1.32434e+12"} {
b.Run(s, func(b *testing.B) {
benchmarkParseRawNumber(b, s)
})
}
}
func benchmarkParseRawNumber(b *testing.B, s string) {
b.ReportAllocs()
b.SetBytes(int64(len(s)))
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
rn, tail, err := parseRawNumber(s)
if err != nil {
panic(fmt.Errorf("cannot parse %q: %s", s, err))
}
if rn != s {
panic(fmt.Errorf("invalid number obtained; got %q; want %q", rn, s))
}
if len(tail) > 0 {
panic(fmt.Errorf("non-empty tail got: %q", tail))
}
}
})
}
func BenchmarkObjectGet(b *testing.B) {
for _, itemsCount := range []int{10, 100, 1000, 10000, 100000} {
b.Run(fmt.Sprintf("items_%d", itemsCount), func(b *testing.B) {
for _, lookupsCount := range []int{0, 1, 2, 4, 8, 16, 32, 64} {
b.Run(fmt.Sprintf("lookups_%d", lookupsCount), func(b *testing.B) {
benchmarkObjectGet(b, itemsCount, lookupsCount)
})
}
})
}
}
func benchmarkObjectGet(b *testing.B, itemsCount, lookupsCount int) {
b.StopTimer()
var ss []string
for i := 0; i < itemsCount; i++ {
s := fmt.Sprintf(`"key_%d": "value_%d"`, i, i)
ss = append(ss, s)
}
s := "{" + strings.Join(ss, ",") + "}"
key := fmt.Sprintf("key_%d", len(ss)/2)
expectedValue := fmt.Sprintf("value_%d", len(ss)/2)
b.StartTimer()
b.ReportAllocs()
b.SetBytes(int64(len(s)))
b.RunParallel(func(pb *testing.PB) {
p := benchPool.Get()
for pb.Next() {
v, err := p.Parse(s)
if err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
o := v.GetObject()
for i := 0; i < lookupsCount; i++ {
sb := o.Get(key).GetStringBytes()
if string(sb) != expectedValue {
panic(fmt.Errorf("unexpected value; got %q; want %q", sb, expectedValue))
}
}
}
benchPool.Put(p)
})
}
func BenchmarkMarshalTo(b *testing.B) {
b.Run("small", func(b *testing.B) {
benchmarkMarshalTo(b, smallFixture)
})
b.Run("medium", func(b *testing.B) {
benchmarkMarshalTo(b, mediumFixture)
})
b.Run("large", func(b *testing.B) {
benchmarkMarshalTo(b, largeFixture)
})
b.Run("canada", func(b *testing.B) {
benchmarkMarshalTo(b, canadaFixture)
})
b.Run("citm", func(b *testing.B) {
benchmarkMarshalTo(b, citmFixture)
})
b.Run("twitter", func(b *testing.B) {
benchmarkMarshalTo(b, twitterFixture)
})
}
func benchmarkMarshalTo(b *testing.B, s string) {
p := benchPool.Get()
v, err := p.Parse(s)
if err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
b.ReportAllocs()
b.SetBytes(int64(len(s)))
b.RunParallel(func(pb *testing.PB) {
var b []byte
for pb.Next() {
// It is ok calling v.MarshalTo from concurrent
// goroutines, since MarshalTo doesn't modify v.
b = v.MarshalTo(b[:0])
}
})
benchPool.Put(p)
}
func BenchmarkParse(b *testing.B) {
b.Run("small", func(b *testing.B) {
benchmarkParse(b, smallFixture)
})
b.Run("medium", func(b *testing.B) {
benchmarkParse(b, mediumFixture)
})
b.Run("large", func(b *testing.B) {
benchmarkParse(b, largeFixture)
})
b.Run("canada", func(b *testing.B) {
benchmarkParse(b, canadaFixture)
})
b.Run("citm", func(b *testing.B) {
benchmarkParse(b, citmFixture)
})
b.Run("twitter", func(b *testing.B) {
benchmarkParse(b, twitterFixture)
})
}
var (
// small, medium and large fixtures are from https://github.com/buger/jsonparser/blob/f04e003e4115787c6272636780bc206e5ffad6c4/benchmark/benchmark.go
smallFixture = getFromFile("testdata/small.json")
mediumFixture = getFromFile("testdata/medium.json")
largeFixture = getFromFile("testdata/large.json")
// canada, citm and twitter fixtures are from https://github.com/serde-rs/json-benchmark/tree/0db02e043b3ae87dc5065e7acb8654c1f7670c43/data
canadaFixture = getFromFile("testdata/canada.json")
citmFixture = getFromFile("testdata/citm_catalog.json")
twitterFixture = getFromFile("testdata/twitter.json")
)
func getFromFile(filename string) string {
data, err := ioutil.ReadFile(filename)
if err != nil {
panic(fmt.Errorf("cannot read %s: %s", filename, err))
}
return string(data)
}
func benchmarkParse(b *testing.B, s string) {
b.Run("stdjson-map", func(b *testing.B) {
benchmarkStdJSONParseMap(b, s)
})
b.Run("stdjson-struct", func(b *testing.B) {
benchmarkStdJSONParseStruct(b, s)
})
b.Run("stdjson-empty-struct", func(b *testing.B) {
benchmarkStdJSONParseEmptyStruct(b, s)
})
b.Run("fastjson", func(b *testing.B) {
benchmarkFastJSONParse(b, s)
})
b.Run("fastjson-get", func(b *testing.B) {
benchmarkFastJSONParseGet(b, s)
})
}
func benchmarkFastJSONParse(b *testing.B, s string) {
b.ReportAllocs()
b.SetBytes(int64(len(s)))
b.RunParallel(func(pb *testing.PB) {
p := benchPool.Get()
for pb.Next() {
v, err := p.Parse(s)
if err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
if v.Type() != TypeObject {
panic(fmt.Errorf("unexpected value type; got %s; want %s", v.Type(), TypeObject))
}
}
benchPool.Put(p)
})
}
func benchmarkFastJSONParseGet(b *testing.B, s string) {
b.ReportAllocs()
b.SetBytes(int64(len(s)))
b.RunParallel(func(pb *testing.PB) {
p := benchPool.Get()
var n int
for pb.Next() {
v, err := p.Parse(s)
if err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
n += v.GetInt("sid")
n += len(v.GetStringBytes("uuid"))
p := v.Get("person")
if p != nil {
n++
}
c := v.Get("company")
if c != nil {
n++
}
u := v.Get("users")
if u != nil {
n++
}
a := v.GetArray("features")
n += len(a)
a = v.GetArray("topicSubTopics")
n += len(a)
o := v.Get("search_metadata")
if o != nil {
n++
}
}
benchPool.Put(p)
})
}
var benchPool ParserPool
func benchmarkStdJSONParseMap(b *testing.B, s string) {
b.ReportAllocs()
b.SetBytes(int64(len(s)))
bb := s2b(s)
b.RunParallel(func(pb *testing.PB) {
var m map[string]interface{}
for pb.Next() {
if err := json.Unmarshal(bb, &m); err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
}
})
}
func benchmarkStdJSONParseStruct(b *testing.B, s string) {
b.ReportAllocs()
b.SetBytes(int64(len(s)))
bb := s2b(s)
b.RunParallel(func(pb *testing.PB) {
var m struct {
Sid int
UUID string
Person map[string]interface{}
Company map[string]interface{}
Users []interface{}
Features []map[string]interface{}
TopicSubTopics map[string]interface{}
SearchMetadata map[string]interface{}
}
for pb.Next() {
if err := json.Unmarshal(bb, &m); err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
}
})
}
func benchmarkStdJSONParseEmptyStruct(b *testing.B, s string) {
b.ReportAllocs()
b.SetBytes(int64(len(s)))
bb := s2b(s)
b.RunParallel(func(pb *testing.PB) {
var m struct{}
for pb.Next() {
if err := json.Unmarshal(bb, &m); err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
}
})
}
|
