1 #region Copyright notice and license 2 3 // Copyright 2015 gRPC authors. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 17 #endregion 18 19 using System; 20 using System.Runtime.InteropServices; 21 using BenchmarkDotNet.Attributes; 22 using Grpc.Core.Internal; 23 24 namespace Grpc.Microbenchmarks 25 { 26 public class ScalabilityExampleBenchmark : CommonThreadedBase 27 { 28 protected override bool NeedsEnvironment => false; 29 30 // An example of testing scalability of a method that scales perfectly. 31 // This method provides a baseline for how well can CommonThreadedBase 32 // measure scalability. 33 const int Iterations = 50 * 1000 * 1000; // High number to make the overhead of RunConcurrent negligible. 34 [Benchmark(OperationsPerInvoke = Iterations)] PerfectScalingExample()35 public void PerfectScalingExample() 36 { 37 RunConcurrent(() => { RunBody(); }); 38 } 39 RunBody()40 private int RunBody() 41 { 42 int result = 0; 43 for (int i = 0; i < Iterations; i++) 44 { 45 // perform some operation that is completely independent from 46 // other threads and therefore should scale perfectly if given 47 // a dedicated thread. 48 for (int j = 0; j < 100; j++) 49 { 50 result = result ^ i ^ j ; 51 } 52 } 53 return result; 54 } 55 } 56 } 57