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.Collections.Concurrent;
21 using System.Collections.Generic;
22 using System.Diagnostics;
23 using System.Threading.Tasks;
24 
25 namespace Grpc.Core.Utils
26 {
27     /// <summary>
28     /// Utility methods to run microbenchmarks.
29     /// </summary>
30     public static class BenchmarkUtil
31     {
32         /// <summary>
33         /// Runs a simple benchmark preceded by warmup phase.
34         /// </summary>
RunBenchmark(int warmupIterations, int benchmarkIterations, Action action)35         public static void RunBenchmark(int warmupIterations, int benchmarkIterations, Action action)
36         {
37             var logger = GrpcEnvironment.Logger;
38 
39             logger.Info("Warmup iterations: {0}", warmupIterations);
40             for (int i = 0; i < warmupIterations; i++)
41             {
42                 action();
43             }
44 
45             logger.Info("Benchmark iterations: {0}", benchmarkIterations);
46             var stopwatch = new Stopwatch();
47             stopwatch.Start();
48             for (int i = 0; i < benchmarkIterations; i++)
49             {
50                 action();
51             }
52             stopwatch.Stop();
53             logger.Info("Elapsed time: {0}ms", stopwatch.ElapsedMilliseconds);
54             logger.Info("Ops per second: {0}", (int)((double)benchmarkIterations  * 1000 / stopwatch.ElapsedMilliseconds));
55         }
56     }
57 }
58