mirror of https://github.com/etcd-io/bbolt.git
97 lines
2.0 KiB
Go
97 lines
2.0 KiB
Go
package bolt
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import (
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"errors"
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"fmt"
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"os"
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"sync"
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"testing"
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)
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const (
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BenchReadMode = "read"
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BenchWriteMode = "write"
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BenchSequentialTraversal = "sequential"
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BenchRandomTraversal = "random"
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)
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type Benchmark struct {
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InputPath string
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ReadWriteMode string
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TraversalPattern string
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Parallelism int
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}
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func NewBenchmark(inputPath, readWriteMode, traversalPattern string, parallelism int) *Benchmark {
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return &Benchmark{inputPath, readWriteMode, traversalPattern, parallelism}
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}
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func (bm *Benchmark) Run(b *testing.B) {
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// Open the database.
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db, err := Open(bm.InputPath, 0600)
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if err != nil {
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b.Fatalf("error: %+v", err)
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return
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}
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defer db.Close()
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buckets, err := buckets(db, bm.InputPath)
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if err != nil {
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b.Fatalf("error: %+v", err)
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}
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b.ResetTimer()
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// Keep running a fixed number of parallel reads until we run out of time.
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for i := 0; i < b.N; i++ {
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var wg sync.WaitGroup
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for j := 0; j < bm.Parallelism; j++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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if err := bm.runBuckets(b, db, buckets); err != nil {
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b.Fatalf("error: %+v", err)
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}
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}()
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}
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wg.Wait()
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}
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}
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// Run benchmark(s) for each of the given buckets.
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func (bm *Benchmark) runBuckets(b *testing.B, db *DB, buckets []string) error {
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return db.View(func(tx *Tx) error {
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bucketsCount := len(buckets)
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for _, bucket := range buckets {
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c := tx.Bucket([]byte(bucket)).Cursor()
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count := 0
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for k, _ := c.First(); k != nil; k, _ = c.Next() {
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count++
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}
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if count != bucketsCount {
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return errors.New(fmt.Sprintf("wrong count: %d; expected: %d", count, bucketsCount))
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}
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}
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return nil
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})
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}
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func buckets(db *DB, path string) ([]string, error) {
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if _, err := os.Stat(path); os.IsNotExist(err) {
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return nil, err
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}
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buckets := []string{}
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err := db.View(func(tx *Tx) error {
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// Iterate over each bucket.
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return tx.ForEach(func(name []byte, _ *Bucket) error {
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buckets = append(buckets, string(name))
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return nil
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})
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})
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return buckets, err
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}
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