Aspnet Boilerplate / Aspnet Zero slow (IoC)

Question

I use the aspnetboilerplate/aspnetzero template for my Multi-Tenant SaaS application with Multi-Database. This uses CastleWindsor as DI Framework.

I experience very bad performance and I tracked it down with dotTrace - it says that Castle.MicroKernel is the most active code.

My requests take about 5-6 seconds and most of the time passes before it even hits the controller. (while debugging) I think that resolving all services/controllers is slow. I changed some dependencies (App-Services) from Transient to PerWebRequestLifetime but it didn't affect performance.

Does anyone know, how I can get better performance?

In my Views (_Layout file) I call several different Childactions, that are on Layoutcontroller, this Controller gets following Services injected:

     public LayoutController(
        IPerSessionCache sessionCache,
        IUserNavigationManager userNavigationManager,
        IMultiTenancyConfig multiTenancyConfig,
        ILanguageManager languageManager,
        ITenancyNameFinder tenancyNameFinder,
        TenantManager tenantManager,
        IUserLinkAppService userLinkAppService,
        UserManager userManager)

Actions are

[ChildActionOnly]
    public PartialViewResult AppHeader()
    {
        var headerModel = new Areas.Mpa.Models.Layout.HeaderViewModel
        {
            LoginInformations = AsyncHelper.RunSync(_sessionCache.GetCurrentLoginInformationsAsync),
            Languages = _languageManager.GetLanguages(),
            CurrentLanguage = _languageManager.CurrentLanguage,
            IsMultiTenancyEnabled = _multiTenancyConfig.IsEnabled,
            IsImpersonatedLogin = AbpSession.ImpersonatorUserId.HasValue,
            HasLinkedAccounts = AsyncHelper.RunSync(_userLinkAppService.HasLinkedAccounts)
        };

        return PartialView("~/Views/Layout/_AppHeader.cshtml", headerModel);
    }

[ChildActionOnly]
    public PartialViewResult AppNavbar(string currentPageName = "")
    {
        var sidebarModel = new Areas.Mpa.Models.Layout.NavbarViewModel
        {        
            Menu = AsyncHelper.RunSync(() => _userNavigationManager.GetMenuAsync(MeNavigationProvider.MenuName, AbpSession.ToUserIdentifier())),
            CurrentPageName = currentPageName
        };

        return PartialView("_AppNavbar", sidebarModel);
    }

and similar ones...But I checked the performance with an empty Layout File but my requests still take way too long

Answer 1

Thanks to Stevens comment:

Make sure your injection constructors are fast. You are probably doing some kind of I/O during object graph construction.

I actually figured out, that this was the problem. One of our Services did I/O in the constructor - which is very slow and results in bad performance of the IoC-Container instantiating it.