minio/pkg/s3select/select_benchmark_test.go

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/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package s3select
import (
"bytes"
"encoding/csv"
"io"
"io/ioutil"
"math/rand"
"net/http"
"strconv"
"testing"
"time"
humanize "github.com/dustin/go-humanize"
)
var randSrc = rand.New(rand.NewSource(time.Now().UnixNano()))
const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
func newRandString(length int) string {
b := make([]byte, length)
for i := range b {
b[i] = charset[randSrc.Intn(len(charset))]
}
return string(b)
}
func genSampleCSVData(count int) []byte {
buf := &bytes.Buffer{}
csvWriter := csv.NewWriter(buf)
csvWriter.Write([]string{"id", "name", "age", "city"})
for i := 0; i < count; i++ {
csvWriter.Write([]string{
strconv.Itoa(i),
newRandString(10),
newRandString(5),
newRandString(10),
})
}
csvWriter.Flush()
return buf.Bytes()
}
type nullResponseWriter struct {
}
func (w *nullResponseWriter) Header() http.Header {
return nil
}
func (w *nullResponseWriter) Write(p []byte) (int, error) {
return len(p), nil
}
func (w *nullResponseWriter) WriteHeader(statusCode int) {
}
func (w *nullResponseWriter) Flush() {
}
func benchmarkSelect(b *testing.B, count int, query string) {
var requestXML = []byte(`
<?xml version="1.0" encoding="UTF-8"?>
<SelectObjectContentRequest>
<Expression>` + query + `</Expression>
<ExpressionType>SQL</ExpressionType>
<InputSerialization>
<CompressionType>NONE</CompressionType>
<CSV>
<FileHeaderInfo>USE</FileHeaderInfo>
</CSV>
</InputSerialization>
<OutputSerialization>
<CSV>
</CSV>
</OutputSerialization>
<RequestProgress>
<Enabled>FALSE</Enabled>
</RequestProgress>
</SelectObjectContentRequest>
`)
csvData := genSampleCSVData(count)
b.ResetTimer()
b.ReportAllocs()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
s3Select, err := NewS3Select(bytes.NewReader(requestXML))
if err != nil {
b.Fatal(err)
}
if err = s3Select.Open(func(offset, length int64) (io.ReadCloser, error) {
return ioutil.NopCloser(bytes.NewReader(csvData)), nil
}); err != nil {
b.Fatal(err)
}
s3Select.Evaluate(&nullResponseWriter{})
s3Select.Close()
}
})
}
func benchmarkSelectAll(b *testing.B, count int) {
benchmarkSelect(b, count, "select * from S3Object")
}
// BenchmarkSelectAll_100K - benchmark * function with 100k records.
func BenchmarkSelectAll_100K(b *testing.B) {
benchmarkSelectAll(b, 100*humanize.KiByte)
}
// BenchmarkSelectAll_1M - benchmark * function with 1m records.
func BenchmarkSelectAll_1M(b *testing.B) {
benchmarkSelectAll(b, 1*humanize.MiByte)
}
// BenchmarkSelectAll_2M - benchmark * function with 2m records.
func BenchmarkSelectAll_2M(b *testing.B) {
benchmarkSelectAll(b, 2*humanize.MiByte)
}
// BenchmarkSelectAll_10M - benchmark * function with 10m records.
func BenchmarkSelectAll_10M(b *testing.B) {
benchmarkSelectAll(b, 10*humanize.MiByte)
}
func benchmarkAggregateCount(b *testing.B, count int) {
benchmarkSelect(b, count, "select count(*) from S3Object")
}
// BenchmarkAggregateCount_100K - benchmark count(*) function with 100k records.
func BenchmarkAggregateCount_100K(b *testing.B) {
benchmarkAggregateCount(b, 100*humanize.KiByte)
}
// BenchmarkAggregateCount_1M - benchmark count(*) function with 1m records.
func BenchmarkAggregateCount_1M(b *testing.B) {
benchmarkAggregateCount(b, 1*humanize.MiByte)
}
// BenchmarkAggregateCount_2M - benchmark count(*) function with 2m records.
func BenchmarkAggregateCount_2M(b *testing.B) {
benchmarkAggregateCount(b, 2*humanize.MiByte)
}
// BenchmarkAggregateCount_10M - benchmark count(*) function with 10m records.
func BenchmarkAggregateCount_10M(b *testing.B) {
benchmarkAggregateCount(b, 10*humanize.MiByte)
}