github.com/m3db/m3@v1.5.1-0.20231129193456-75a402aa583b/src/dbnode/encoding/m3tsz/decoder_benchmark_test.go (about)

     1  // Copyright (c) 2020 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package m3tsz
    22  
    23  import (
    24  	"encoding/base64"
    25  	"math/rand"
    26  	"testing"
    27  
    28  	"github.com/m3db/m3/src/dbnode/encoding"
    29  	"github.com/m3db/m3/src/dbnode/x/xio"
    30  
    31  	"github.com/stretchr/testify/require"
    32  )
    33  
    34  // BenchmarkM3TSZDecode-12    	   16867	     69272 ns/op
    35  func BenchmarkM3TSZDecode(b *testing.B) {
    36  	var (
    37  		encodingOpts = encoding.NewOptions()
    38  		reader       = xio.NewBytesReader64(nil)
    39  		seriesRun    = prepareSampleSeriesRun(b)
    40  	)
    41  
    42  	b.ResetTimer()
    43  	for i := 0; i < b.N; i++ {
    44  		reader.Reset(seriesRun[i])
    45  		iter := NewReaderIterator(reader, DefaultIntOptimizationEnabled, encodingOpts)
    46  		for iter.Next() {
    47  			_, _, _ = iter.Current()
    48  		}
    49  		require.NoError(b, iter.Err())
    50  	}
    51  }
    52  
    53  func prepareSampleSeriesRun(b *testing.B) [][]byte {
    54  	b.Helper()
    55  	var (
    56  		rnd          = rand.New(rand.NewSource(42)) // nolint: gosec
    57  		sampleSeries = make([][]byte, 0, len(sampleSeriesBase64))
    58  		seriesRun    = make([][]byte, 0, b.N)
    59  	)
    60  
    61  	for _, b64 := range sampleSeriesBase64 {
    62  		data, err := base64.StdEncoding.DecodeString(b64)
    63  		require.NoError(b, err)
    64  		sampleSeries = append(sampleSeries, data)
    65  	}
    66  
    67  	for i := 0; i < b.N; i++ {
    68  		seriesRun = append(seriesRun, sampleSeries[rnd.Intn(len(sampleSeries))])
    69  	}
    70  
    71  	return seriesRun
    72  }