wathiede/rustperf
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Refactor unit test and benchmark. Include hand rolled implementation.

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This commit is contained in:
Bill Thiede 2019-10-26 14:02:57 -07:00
parent ac30dcd125
commit 7707ff9660
4 changed files with 102 additions and 83 deletions
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12
README.md
View File

@ -6,7 +6,7 @@
running 2 tests
test vec3::tests::test_vec3_to_json ... ignored
test vec3::tests::bench_vec3_to_json ... bench: 181,463 ns/iter (+/- 52,876)
test vec3::tests::bench_vec3_to_json ... bench: 181,127 ns/iter (+/- 37,666)
test result: ok. 0 passed; 0 failed; 1 ignored; 1 measured; 0 filtered out
@ -24,9 +24,11 @@ test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
goos: linux
goarch: amd64
pkg: xinu.tv/rustperf/src
BenchmarkVec3ToJSONStdlib-8 2755 481252 ns/op
BenchmarkVec3ToJSONIterator-8 2395 515586 ns/op
BenchmarkVec3ToJSONGojay-8 1372 877632 ns/op
BenchmarkVec3ToJSON/HandRolled-8 3042 338000 ns/op
BenchmarkVec3ToJSON/stdlib-8 2754 459788 ns/op
BenchmarkVec3ToJSON/ffjson-8 2697 457685 ns/op
BenchmarkVec3ToJSON/iterator-8 2542 483460 ns/op
BenchmarkVec3ToJSON/gojay-8 1303 905583 ns/op
PASS
ok xinu.tv/rustperf/src 4.947s
ok xinu.tv/rustperf/src 6.989s
```

1
go.mod
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@ -5,4 +5,5 @@ go 1.13
require (
github.com/francoispqt/gojay v1.2.13
github.com/json-iterator/go v1.1.7
github.com/pquerna/ffjson v0.0.0-20190930134022-aa0246cd15f7
)

2
go.sum
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@ -70,6 +70,8 @@ github.com/neelance/sourcemap v0.0.0-20151028013722-8c68805598ab/go.mod h1:Qr6/a
github.com/openzipkin/zipkin-go v0.1.1/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/pquerna/ffjson v0.0.0-20190930134022-aa0246cd15f7 h1:xoIK0ctDddBMnc74udxJYBqlo9Ylnsp1waqjLsnef20=
github.com/pquerna/ffjson v0.0.0-20190930134022-aa0246cd15f7/go.mod h1:YARuvh7BUWHNhzDq2OM5tzR2RiCcN2D7sapiKyCel/M=
github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=

170
src/vec3_test.go
View File

@ -3,12 +3,33 @@ package main
import (
"encoding/json"
"reflect"
"strconv"
"testing"
"github.com/francoispqt/gojay"
jsoniter "github.com/json-iterator/go"
"github.com/pquerna/ffjson/ffjson"
)
func HandRolled(vs []Vec3) ([]byte, error) {
buf := []byte("[")
for i, v := range vs {
if i > 0 {
buf = append(buf, []byte(`,{"x":`)...)
} else {
buf = append(buf, []byte(`{"x":`)...)
}
buf = strconv.AppendFloat(buf, float64(v.X), 'f', -1, 32)
buf = append(buf, []byte(`,"y":`)...)
buf = strconv.AppendFloat(buf, float64(v.Y), 'f', -1, 32)
buf = append(buf, []byte(`,"z":`)...)
buf = strconv.AppendFloat(buf, float64(v.Z), 'f', -1, 32)
buf = append(buf, []byte("}")...)
}
buf = append(buf, ']')
return buf, nil
}
type Vec3 struct {
X float32 `json:"x"`
Y float32 `json:"y"`
@ -37,20 +58,50 @@ func (vs Vec3Slice) IsNil() bool {
return vs == nil
}
func TestVec3ToJSONStdlib(t *testing.T) {
vecs := []Vec3{{X: 1.0, Y: 2.0, Z: 3.0}}
got, err := json.Marshal(vecs)
if err != nil {
t.Fatalf("Failed to marshal: %v", err)
func TestVec3ToJSON(t *testing.T) {
vecs := []Vec3{
{X: 1.0, Y: 2.0, Z: 3.0},
{X: 4.5, Y: 5.0, Z: 6.0},
}
want := []byte(`[{"x":1,"y":2,"z":3}]`)
if !reflect.DeepEqual(want, got) {
t.Fatalf("got != want\nGot: %s\nWant: %s", got, want)
for _, ts := range []struct {
name string
f func([]Vec3) ([]byte, error)
}{
{"HandRolled", HandRolled},
{"stdlib", func(vs []Vec3) ([]byte, error) {
return json.Marshal(vs)
}},
{"ffjson", func(vs []Vec3) ([]byte, error) {
return ffjson.Marshal(vecs)
}},
{"iterator", func(vs []Vec3) ([]byte, error) {
var js = jsoniter.ConfigCompatibleWithStandardLibrary
return js.Marshal(vecs)
}},
{"gojay", func(vs []Vec3) ([]byte, error) {
var vecs Vec3Slice
for _, v := range vs {
v := v
vecs = append(vecs, &v)
}
return gojay.Marshal(&vecs)
}},
} {
t.Run(ts.name, func(t *testing.T) {
got, err := ts.f(vecs)
if err != nil {
t.Fatalf("Failed to marshal: %v", err)
}
want := []byte(`[{"x":1,"y":2,"z":3},{"x":4.5,"y":5,"z":6}]`)
if !reflect.DeepEqual(want, got) {
t.Fatalf("got != want\nGot: %s\nWant: %s", got, want)
}
})
}
}
func BenchmarkVec3ToJSONStdlib(b *testing.B) {
func BenchmarkVec3ToJSON(b *testing.B) {
var vecs []Vec3
for i := 0; i < 1000; i++ {
@ -60,74 +111,37 @@ func BenchmarkVec3ToJSONStdlib(b *testing.B) {
Z: 255. * float32(i) / 1000.,
})
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
if _, err := json.Marshal(vecs); err != nil {
b.Fatalf("Failed to marshal: %v", err)
}
}
}
for _, ts := range []struct {
name string
f func([]Vec3) ([]byte, error)
}{
{"HandRolled", HandRolled},
{"stdlib", func(vs []Vec3) ([]byte, error) {
return json.Marshal(vs)
}},
{"ffjson", func(vs []Vec3) ([]byte, error) {
return ffjson.Marshal(vecs)
}},
{"iterator", func(vs []Vec3) ([]byte, error) {
var js = jsoniter.ConfigCompatibleWithStandardLibrary
return js.Marshal(vecs)
}},
{"gojay", func(vs []Vec3) ([]byte, error) {
var vecs Vec3Slice
for _, v := range vs {
v := v
vecs = append(vecs, &v)
}
func TestVec3ToJSONIterator(t *testing.T) {
vecs := []Vec3{{X: 1.0, Y: 2.0, Z: 3.0}}
var json = jsoniter.ConfigCompatibleWithStandardLibrary
got, err := json.Marshal(vecs)
if err != nil {
t.Fatalf("Failed to marshal: %v", err)
}
want := []byte(`[{"x":1,"y":2,"z":3}]`)
if !reflect.DeepEqual(want, got) {
t.Fatalf("got != want\nGot: %s\nWant: %s", got, want)
}
}
func BenchmarkVec3ToJSONIterator(b *testing.B) {
var vecs []Vec3
for i := 0; i < 1000; i++ {
vecs = append(vecs, Vec3{
X: 255. * float32(i) / 1000.,
Y: 255. * float32(i) / 1000.,
Z: 255. * float32(i) / 1000.,
return gojay.Marshal(&vecs)
}},
} {
b.Run(ts.name, func(b *testing.B) {
for i := 0; i < b.N; i++ {
if _, err := ts.f(vecs); err != nil {
b.Fatalf("Failed to marshal: %v", err)
}
}
})
}
var json = jsoniter.ConfigCompatibleWithStandardLibrary
b.ResetTimer()
for i := 0; i < b.N; i++ {
if _, err := json.Marshal(vecs); err != nil {
b.Fatalf("Failed to marshal: %v", err)
}
}
}
func TestVec3ToJSONGojay(t *testing.T) {
vecs := Vec3Slice{{X: 1.0, Y: 2.0, Z: 3.0}}
got, err := gojay.Marshal(&vecs)
if err != nil {
t.Fatalf("Failed to marshal: %v", err)
}
want := []byte(`[{"x":1,"y":2,"z":3}]`)
if !reflect.DeepEqual(want, got) {
t.Fatalf("got != want\nGot: %s\nWant: %s", got, want)
}
}
func BenchmarkVec3ToJSONGojay(b *testing.B) {
vecs := Vec3Slice{}
for i := 0; i < 1000; i++ {
vecs = append(vecs, &Vec3{
X: 255. * float32(i) / 1000.,
Y: 255. * float32(i) / 1000.,
Z: 255. * float32(i) / 1000.,
})
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
if _, err := gojay.Marshal(&vecs); err != nil {
b.Fatalf("Failed to marshal: %v", err)
}
}
}