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package gozstd
import (
"fmt"
"io/ioutil"
"testing"
)
const benchBlocksPerStream = 10
func BenchmarkWriterDict(b *testing.B) {
for _, blockSize := range benchBlockSizes {
b.Run(fmt.Sprintf("blockSize_%d", blockSize), func(b *testing.B) {
for _, level := range benchCompressionLevels {
b.Run(fmt.Sprintf("level_%d", level), func(b *testing.B) {
benchmarkWriterDict(b, blockSize, level)
})
}
})
}
}
func benchmarkWriterDict(b *testing.B, blockSize, level int) {
bd := getBenchDicts(level)
block := newBenchString(blockSize * benchBlocksPerStream)
b.ReportAllocs()
b.SetBytes(int64(len(block)))
b.RunParallel(func(pb *testing.PB) {
zw := NewWriterDict(ioutil.Discard, bd.cd)
defer zw.Release()
for pb.Next() {
for i := 0; i < benchBlocksPerStream; i++ {
_, err := zw.Write(block[i*blockSize : (i+1)*blockSize])
if err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
}
if err := zw.Close(); err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
zw.Reset(ioutil.Discard, bd.cd, level)
}
})
}
func BenchmarkWriter(b *testing.B) {
for _, blockSize := range benchBlockSizes {
b.Run(fmt.Sprintf("blockSize_%d", blockSize), func(b *testing.B) {
for _, level := range benchCompressionLevels {
b.Run(fmt.Sprintf("level_%d", level), func(b *testing.B) {
benchmarkWriter(b, blockSize, level)
})
}
})
}
}
func benchmarkWriter(b *testing.B, blockSize, level int) {
block := newBenchString(blockSize * benchBlocksPerStream)
b.ReportAllocs()
b.SetBytes(int64(len(block)))
b.RunParallel(func(pb *testing.PB) {
zw := NewWriterLevel(ioutil.Discard, level)
defer zw.Release()
for pb.Next() {
for i := 0; i < benchBlocksPerStream; i++ {
_, err := zw.Write(block[i*blockSize : (i+1)*blockSize])
if err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
}
if err := zw.Close(); err != nil {
panic(fmt.Errorf("unexpected error: %s", err))
}
zw.Reset(ioutil.Discard, nil, level)
}
})
}
func BenchmarkWriterResetAlloc(b *testing.B) {
b.ReportAllocs()
params := &WriterParams{}
zw := NewWriter(ioutil.Discard)
defer zw.Release()
for n := 0; n < b.N; n++ {
zw.Reset(ioutil.Discard, nil, 0)
zw.ResetWriterParams(ioutil.Discard, params)
}
}
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