using System; using System.Diagnostics; using System.IO; using System.Text; using System.Threading.Tasks; static StreamWriter Syncsw = new StreamWriter("SyncSW.txt", true, Encoding.UTF8); static StreamWriter Asyncsw = new StreamWriter("AsyncSW.txt", true, Encoding.UTF8); static int maxTimes = 10000000; static void Main(string[] args) { TestSync(); TestAsync(); } static void TestAsync() { Stopwatch sw = new Stopwatch(); sw.Start(); Task t = Task.Run(() => { for (int i = 0; i < maxTimes; i++) { string msg = $"{i}i,Guid:{Guid.NewGuid().ToString()}"; LogMsgASync(msg); } }); t.Wait(); sw.Stop(); string cost = $"Async cost {sw.ElapsedMilliseconds} milliseconds"; LogCost(cost); } static void TestSync() { Stopwatch sw = new Stopwatch(); sw.Start(); DoWork(); sw.Stop(); string cost = $"Sync cost {sw.ElapsedMilliseconds} milliseconds"; LogCost(cost); } static void DoWork() { for(int i=0;i<maxTimes;i++) { string msg = $"{i}i,Guid:{Guid.NewGuid().ToString()}"; LogMsgSync(msg); } } static void LogMsgSync(string msg) { Syncsw.WriteLine(msg); } static void LogMsgASync(string msg) { Asyncsw.WriteLine(msg); } static void LogCost(string cost) { File.AppendAllText("time.txt", $"Time:{DateTime.Now.ToString("yyyyMMddHHmmssffff")} {cost}{Environment.NewLine}"); }
The time cost as below.
Time:202006151201519630 Sync cost 9596 milliseconds
Time:202006151202006961 Async cost 8726 milliseconds
The fact has illustrated that the async has speed advantages