99 lines
2.7 KiB
Go
99 lines
2.7 KiB
Go
// Copyright 2016 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tablecodec
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import (
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"testing"
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"time"
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"github.com/pingcap/tidb/pkg/kv"
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"github.com/pingcap/tidb/pkg/types"
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"github.com/pingcap/tidb/pkg/util/benchdaily"
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"github.com/pingcap/tidb/pkg/util/codec"
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)
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func BenchmarkEncodeRowKeyWithHandle(b *testing.B) {
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for i := 0; i < b.N; i++ {
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EncodeRowKeyWithHandle(100, kv.IntHandle(100))
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}
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}
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func BenchmarkEncodeEndKey(b *testing.B) {
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for i := 0; i < b.N; i++ {
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EncodeRowKeyWithHandle(100, kv.IntHandle(100))
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EncodeRowKeyWithHandle(100, kv.IntHandle(101))
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}
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}
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// BenchmarkEncodeRowKeyWithPrefixNex tests the performance of encoding row key with prefixNext
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// PrefixNext() is slow than using EncodeRowKeyWithHandle.
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// BenchmarkEncodeEndKey-4 20000000 97.2 ns/op
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// BenchmarkEncodeRowKeyWithPrefixNex-4 10000000 121 ns/op
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func BenchmarkEncodeRowKeyWithPrefixNex(b *testing.B) {
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for i := 0; i < b.N; i++ {
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sk := EncodeRowKeyWithHandle(100, kv.IntHandle(100))
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sk.PrefixNext()
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}
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}
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func BenchmarkDecodeRowKey(b *testing.B) {
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rowKey := EncodeRowKeyWithHandle(100, kv.IntHandle(100))
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for i := 0; i < b.N; i++ {
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_, err := DecodeRowKey(rowKey)
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if err != nil {
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b.Fatal(err)
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}
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}
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}
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func BenchmarkDecodeIndexKeyIntHandle(b *testing.B) {
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var idxVal []byte
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// When handle values greater than 255, it will have a memory alloc.
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idxVal = append(idxVal, EncodeHandleInUniqueIndexValue(kv.IntHandle(256), false)...)
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for i := 0; i < b.N; i++ {
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DecodeHandleInIndexValue(idxVal)
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}
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}
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func BenchmarkDecodeIndexKeyCommonHandle(b *testing.B) {
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var idxVal []byte
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idxVal = append(idxVal, 0)
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// index version
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idxVal = append(idxVal, IndexVersionFlag)
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idxVal = append(idxVal, byte(1))
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// common handle
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encoded, _ := codec.EncodeKey(time.UTC, nil, types.MakeDatums(1, 2)...)
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h, _ := kv.NewCommonHandle(encoded)
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idxVal = encodeCommonHandle(idxVal, h)
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for i := 0; i < b.N; i++ {
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DecodeHandleInIndexValue(idxVal)
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}
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}
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func TestBenchDaily(t *testing.T) {
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benchdaily.Run(
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BenchmarkEncodeRowKeyWithHandle,
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BenchmarkEncodeEndKey,
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BenchmarkEncodeRowKeyWithPrefixNex,
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BenchmarkDecodeRowKey,
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BenchmarkHasTablePrefix,
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BenchmarkHasTablePrefixBuiltin,
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BenchmarkEncodeValue,
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)
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}
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