UnityContainer性能测试结果

Question

作为团结基本演示的一部分,我创建了以下控制台应用程序(有点冗长):

IUnityContainer container = new UnityContainer();
        container.RegisterType<ISimpleClass, SimpleClass>();
        container.RegisterType<ISingletonWithUnity, SingletonWithUnity>(new ContainerControlledLifetimeManager());

        double N = 10000;
        double sum = 0;

        Console.WriteLine("Testing performace of a basic new object");
        for (int i = 0; i < N; i++)
        {
            DateTime start = DateTime.Now;
            ISimpleClass simpleClass = new SimpleClass();
            DateTime end = DateTime.Now;
            sum += (end - start).Milliseconds;
        }
        double average = sum/N;
        Console.WriteLine("Average time for basic new object is: " + average);


        Console.WriteLine("Testing performance of transient resolve using unity");
        sum = 0;
        for (int i = 0; i < N; i++)
        {
            DateTime start = DateTime.Now;
            ISimpleClass simpleClass = container.Resolve<SimpleClass>();
            DateTime end = DateTime.Now;
            sum += (end - start).Milliseconds;
        }
        average = sum / N;

        Console.WriteLine("Average time for transient resolve using unity is: " + average);


        Console.WriteLine("Testing performance of basic singleton");
        sum = 0;
        for (int i = 0; i < N; i++)
        {
            DateTime start = DateTime.Now;
            BasicSingltonClass basicSingltonClass = BasicSingltonClass.Instance;
            DateTime end = DateTime.Now;
            sum += (end - start).Milliseconds;
        }
        average = sum / N;

        Console.WriteLine("Average time for basic singleton is: " + average);

        Console.WriteLine("Testing performance of unity singleton");
        sum = 0;
        for (int i = 0; i < N; i++)
        {
            DateTime start = DateTime.Now;
            SingletonWithUnity singletonWithUnity = container.Resolve<SingletonWithUnity>();
            DateTime end = DateTime.Now;
            sum += (end - start).Milliseconds;
        }
        average = sum / N;

        Console.WriteLine("Average time for unity singleton is: " + average);

测试中使用的类非常简单:

• SimpleClass只是一个空类
• BasicSingletonClass正是它在实例getter上使用通常的Double Checked Locking.
• SingletonWithUnity也只是一个空类,但正如您所看到的,它已在ContainerControlleredLifetimeManager中注册.

随着N越来越高(高达100万),我得到的结果显示使用单位实际上要慢得多,然后才使用它.我以前认为Unity有某种结果的缓存,这样可以使它更快,特别是在瞬态解析中.

以下是N设置为10,000时运行性能测试应用程序的结果示例:

测试基本新对象的性能基本新对象的平均时间为:0.0007

使用单位测试瞬态分辨率的性能使用单位的瞬态分辨的平均时间是:0.008

基本单例的测试性能基本单例的平均时间为:0.0012

统一单身的测试性能统一单身的平均时间是:0.0033

按任意键继续 ...

正如您所看到的,使用Unity会对性能产生影响.我想就你在幕后发生什么来解释这些结果得到你的诚实意见.

提前致谢!

Answer 1

请记住,Unity必须为接口找到适当的具体类,然后如果找到它,则构造它.即使缓存解析也不会改变这样一个事实,即只需要自己新建对象就可以进行额外的方法调用和(可能是缓存的)查找.

Unity并不是真正旨在提高对象创建性能.它旨在提供一个强大的DI容器,可以帮助减少耦合并简化代码测试.