github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/storage/enginepb/decode_test.go (about)

     1  // Copyright 2018 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package enginepb_test
    12  
    13  import (
    14  	"encoding/binary"
    15  	"testing"
    16  
    17  	"github.com/cockroachdb/cockroach/pkg/roachpb"
    18  	"github.com/cockroachdb/cockroach/pkg/storage"
    19  	"github.com/cockroachdb/cockroach/pkg/storage/enginepb"
    20  	"github.com/cockroachdb/cockroach/pkg/util/hlc"
    21  )
    22  
    23  func BenchmarkScanDecodeKeyValue(b *testing.B) {
    24  	key := roachpb.Key("blah blah blah")
    25  	ts := hlc.Timestamp{WallTime: int64(1000000)}
    26  	value := []byte("foo foo foo")
    27  	rep := make([]byte, 8)
    28  	keyBytes := storage.EncodeKey(storage.MVCCKey{Key: key, Timestamp: ts})
    29  	binary.LittleEndian.PutUint64(rep, uint64(len(keyBytes)<<32)|uint64(len(value)))
    30  	rep = append(rep, keyBytes...)
    31  	rep = append(rep, value...)
    32  	b.Run("getTs=true", func(b *testing.B) {
    33  		for i := 0; i < b.N; i++ {
    34  			var err error
    35  			_, _, _, _, err = enginepb.ScanDecodeKeyValue(rep)
    36  			if err != nil {
    37  				b.Fatal(err)
    38  			}
    39  		}
    40  	})
    41  	b.Run("getTs=false", func(b *testing.B) {
    42  		for i := 0; i < b.N; i++ {
    43  			var err error
    44  			_, _, _, err = enginepb.ScanDecodeKeyValueNoTS(rep)
    45  			if err != nil {
    46  				b.Fatal(err)
    47  			}
    48  		}
    49  	})
    50  }