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POmultithread performance problem for web service call
 

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    <p>Here is my sample program for web service server side and client side. I met with a strnage performance problem, which is, even if I increase the number of threads to call web services, the performance is not improved. At the same time, the CPU/memory/network consumption from performance panel of task manager is low. I am wondering what is the bottleneck and how to improve it?</p> <p>(My test experience, double the number of threads will almost double the total response time)</p> <p>Client side:</p> <pre><code>class Program { static Service1[] clients = null; static Thread[] threads = null; static void ThreadJob (object index) { // query 1000 times for (int i = 0; i &lt; 100; i++) { clients[(int)index].HelloWorld(); } } static void Main(string[] args) { Console.WriteLine("Specify number of threads: "); int number = Int32.Parse(Console.ReadLine()); clients = new Service1[number]; threads = new Thread[number]; for (int i = 0; i &lt; number; i++) { clients [i] = new Service1(); ParameterizedThreadStart starter = new ParameterizedThreadStart(ThreadJob); threads[i] = new Thread(starter); } DateTime begin = DateTime.Now; for (int i = 0; i &lt; number; i++) { threads[i].Start(i); } for (int i = 0; i &lt; number; i++) { threads[i].Join(); } Console.WriteLine("Total elapsed time (s): " + (DateTime.Now - begin).TotalSeconds); return; } } </code></pre> <p>Server side:</p> <pre><code> [WebMethod] public double HelloWorld() { return new Random().NextDouble(); } </code></pre> <p>thanks in advance, George</p>
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    1. COPlease update original question instead of posting answers to your own question.
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