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83 lines
1.6 KiB
83 lines
1.6 KiB
package db
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"testing"
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cmn "github.com/tendermint/tendermint/libs/common"
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)
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func BenchmarkRandomReadsWrites(b *testing.B) {
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b.StopTimer()
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numItems := int64(1000000)
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internal := map[int64]int64{}
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for i := 0; i < int(numItems); i++ {
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internal[int64(i)] = int64(0)
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}
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db, err := NewGoLevelDB(fmt.Sprintf("test_%x", cmn.RandStr(12)), "")
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if err != nil {
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b.Fatal(err.Error())
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return
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}
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fmt.Println("ok, starting")
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b.StartTimer()
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for i := 0; i < b.N; i++ {
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// Write something
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{
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idx := (int64(cmn.RandInt()) % numItems)
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internal[idx]++
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val := internal[idx]
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idxBytes := int642Bytes(int64(idx))
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valBytes := int642Bytes(int64(val))
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//fmt.Printf("Set %X -> %X\n", idxBytes, valBytes)
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db.Set(
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idxBytes,
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valBytes,
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)
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}
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// Read something
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{
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idx := (int64(cmn.RandInt()) % numItems)
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val := internal[idx]
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idxBytes := int642Bytes(int64(idx))
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valBytes := db.Get(idxBytes)
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//fmt.Printf("Get %X -> %X\n", idxBytes, valBytes)
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if val == 0 {
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if !bytes.Equal(valBytes, nil) {
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b.Errorf("Expected %v for %v, got %X",
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nil, idx, valBytes)
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break
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}
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} else {
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if len(valBytes) != 8 {
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b.Errorf("Expected length 8 for %v, got %X",
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idx, valBytes)
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break
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}
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valGot := bytes2Int64(valBytes)
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if val != valGot {
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b.Errorf("Expected %v for %v, got %v",
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val, idx, valGot)
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break
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}
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}
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}
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}
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db.Close()
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}
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func int642Bytes(i int64) []byte {
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buf := make([]byte, 8)
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binary.BigEndian.PutUint64(buf, uint64(i))
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return buf
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}
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func bytes2Int64(buf []byte) int64 {
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return int64(binary.BigEndian.Uint64(buf))
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}
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