c# - 我应该使用线程来提高这些代码的性能吗？

Question

在我的编码中，我想获得一些性能改进，所以我认为线程是一个选择，但我对多线程和数据共享问题没有信心。有人可以查看这些代码并给我任何建议，谢谢！

 public partial class WorkflowService: IWorkflowService
 {
         public void StartProcess(WfAppRunner starter)
            {
                try
                {
                    WfRuntimeManager runtimeManager = new WfRuntimeManagerStartup();
                    runtimeManager.AppRunner = starter;
                    runtimeManager.Execute();
                }
                catch (System.Exception)
                {
                    throw;
                }
            }
 }

internal abstract class WfRuntimeManager
{
        internal WfAppRunner AppRunner { get; set; }
        internal abstract void ExecuteInstance();
        internal bool Execute()
        {
            try
            {
                Thread thread = new Thread(ExecuteInstance);
                thread.Start();

                return true;
            }
            catch (System.Exception)
            {
                throw;
            }
        }
}

internal class WfRuntimeManagerStartup : WfRuntimeManager
{
    internal override void ExecuteInstance()
    {
        ISession session = SessionFactory.CreateSession();
        try
        {
            var runner = base.AppRunner;

            //do some works with runner, and save works to database.
            SaveToDatabase(runner);

        ...

        //do some other works
        ProcessOtherWorks();

            session.Commit();
        }
        catch (System.Exception)
        {
            session.Rollback();
        }
        finally
        {
            session.Dispose();
        }
    }
}

//do some test, minic the true user case
[TestMethod]
public void RunParalleled()
{
    //StarterA:
    //{"UserID":"10","UserName":"Long","AppName":"SamplePrice","AppInstanceID":"100","ProcessGUID":"072af8c3-482a-4b1c-890b-685ce2fcc75d"}
    var starterA = new WfAppRunner();
    starterA.ProcessGUID = Guid.Parse("072af8c3-482a-4b1c-890b-685ce2fcc75d");
    starterA.UserID = 10;
    starterA.UserName = "Long";

    //SarterB:
    //{"AppName":"Offin","AppInstanceID":587,"UserID":"0021","UserName":"test2","ProcessGUID":"68696ea3-00ab-4b40-8fcf-9859dbbde378","FlowStatus":null,"Conditions":{"surplus":"aa"}}
    var starterB = new WfAppRunner();
    starterB.ProcessGUID = Guid.Parse("68696ea3-00ab-4b40-8fcf-9859dbbde378");
    starterB.UserID = 21;
    starterB.UserName = "test2";

    IWorkflowService serviceA, serviceB;
    for (var i = 0; i < 5000; i++)
    {
        serviceA = new WorkflowService();
        starterA.AppName = "Price";
        starterA.AppInstanceID = i;

        serviceB = new WorkflowService();
        starterB.AppName = "Offin";
        starterB.AppInstanceID = i;

        //execute process instance
        serviceA.StartProcess(starterA);
        serviceB.StartProcess(starterB);
    }
}