// Copyright 2018 PingCAP, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // See the License for the specific language governing permissions and // limitations under the License. package tracing import ( "context" "fmt" "testing" ) // BenchmarkNoopLogKV benchs the cost of noop's `LogKV`. func BenchmarkNoopLogKV(b *testing.B) { sp := noopSpan() for i := 0; i < b.N; i++ { sp.LogKV("event", "noop is finished") } } // BenchmarkNoopLogKVWithF benchs the the cosst of noop's `LogKV` when // used with `fmt.Sprintf` func BenchmarkNoopLogKVWithF(b *testing.B) { sp := noopSpan() for i := 0; i < b.N; i++ { sp.LogKV("event", fmt.Sprintf("this is format %s", "noop is finished")) } } // BenchmarkSpanFromContext benchs the cost of `SpanFromContext`. func BenchmarkSpanFromContext(b *testing.B) { ctx := context.TODO() for i := 0; i < b.N; i++ { SpanFromContext(ctx) } } // BenchmarkChildFromContext benchs the cost of `ChildSpanFromContxt`. func BenchmarkChildFromContext(b *testing.B) { ctx := context.TODO() for i := 0; i < b.N; i++ { ChildSpanFromContxt(ctx, "child") } }