Question

So we’re setting up a worker role with windows azure and it’s running at a very high cpu utilization. I think it has something to do with this section, but I’m not sure what to do about it. Each individual thread that gets started has its own sleep, but the main thread just runs in a while loop. Shouldn’t there be a sleep in there or something?

public class WorkerRole : RoleEntryPoint
    {
        private List<ProcessBase> backgroundProcesses = new List<ProcessBase>();

        public override void Run()
        {
            // This is a sample worker implementation. Replace with your logic.
            Trace.WriteLine("BackgroundProcesses entry point called", "Information");

            foreach (ProcessBase process in backgroundProcesses)
            {
                if (process.Active)
                {
                    Task.Factory.StartNew(process.Run, TaskCreationOptions.LongRunning);
                }
            }

            while (true) { }
        }

How about something like this, would this be appropriate?

  public override void Run()
        {
            // This is a sample worker implementation. Replace with your logic.
            Trace.WriteLine("BackgroundProcesses entry point called", "Information");

            List<Task> TaskList = new List<Task>();

            foreach (ProcessBase process in backgroundProcesses)
            {
                if (process.Active)
                {
                    TaskList.Add(Task.Factory.StartNew(process.Run, TaskCreationOptions.LongRunning));
                }
            }

            Task.WaitAll(TaskList.ToArray());
            //while (true) {  }
        }

Answer 1

Just deployed this to production this morning after testing it last night on staging. Seems to be working great. CPU usage went down to .03% average for the background process down from 99.5% …

 public override void Run()
        {
            // This is a sample worker implementation. Replace with your logic.
            Trace.WriteLine("BackgroundProcesses entry point called", "Information");

            List<Task> TaskList = new List<Task>();

            foreach (ProcessBase process in backgroundProcesses)
            {
                if (process.Active)
                {
                    TaskList.Add(Task.Factory.StartNew(process.Run, TaskCreationOptions.LongRunning));
                }
            }

            Task.WaitAll(TaskList.ToArray());
            //while (true) {  }
        }