github.com/whtcorpsinc/milevadb-prod@v0.0.0-20211104133533-f57f4be3b597/soliton/tracing/noop_bench_test.go (about)

     1  // Copyright 2020 WHTCORPS INC, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package tracing
    15  
    16  import (
    17  	"context"
    18  	"fmt"
    19  	"testing"
    20  )
    21  
    22  // BenchmarkNoopLogKV benchs the cost of noop's `LogKV`.
    23  func BenchmarkNoopLogKV(b *testing.B) {
    24  	sp := noopSpan()
    25  	for i := 0; i < b.N; i++ {
    26  		sp.LogKV("event", "noop is finished")
    27  	}
    28  }
    29  
    30  // BenchmarkNoopLogKVWithF benchs the the cosst of noop's `LogKV` when
    31  // used with `fmt.Sprintf`
    32  func BenchmarkNoopLogKVWithF(b *testing.B) {
    33  	sp := noopSpan()
    34  	for i := 0; i < b.N; i++ {
    35  		sp.LogKV("event", fmt.Sprintf("this is format %s", "noop is finished"))
    36  	}
    37  }
    38  
    39  // BenchmarkSpanFromContext benchs the cost of `SpanFromContext`.
    40  func BenchmarkSpanFromContext(b *testing.B) {
    41  	ctx := context.TODO()
    42  	for i := 0; i < b.N; i++ {
    43  		SpanFromContext(ctx)
    44  	}
    45  }
    46  
    47  // BenchmarkChildFromContext benchs the cost of `ChildSpanFromContxt`.
    48  func BenchmarkChildFromContext(b *testing.B) {
    49  	ctx := context.TODO()
    50  	for i := 0; i < b.N; i++ {
    51  		ChildSpanFromContxt(ctx, "child")
    52  	}
    53  }