will Task.Run() make any difference in performance?
asp.net-mvc-4, async-await, c#, c#-5.0, task-parallel-library
Solution
The code you posted won't compile. From the title of your question, I'm assuming that your call actually looks like `await Task.Run(() => _daoClass.GetClasses(classId));`
In that case, the use of `Task.Run` will make a difference in performance: it will be worse.
The point of `async` on the server side is to free up the request thread instead of blocking it. What you're doing with `await Task.Run(...)` is to free up the request thread by starting work on another thread. In other words, the `Task.Run` code has the same amount of work to do plus thread marshaling.
Problem
I have a method which calls database as shown below: BL Method to call DAO method: ``` public async Task<List<Classes>> GetClassesAndAddRules(string classId) { var classData = await Task.Run( () => _daoClass.GetClasses(classId)); //logic for adding rule //.................................. } ``` DatabaseCall in DAO: ``` //*below method takes 1 second approx to return* public List<Classes> GetClasses(string id) { var retVal = new List<Classes>(); using (var context = new test_db_context()) { var rows = context.GetClassesById(id); foreach (ClassesDBComplexType row in rows) { retVal.Add(Mapper.Map<GetClassesByClassIdOut>(row)); } } return retVal; } ``` Is there any performance boost just my calling the DAO method using await ? My understanding is GetClasses() will be called on a separate thread so that it doesn't block and continue processing other stuff. Any help is appreciated.