Html.RenderAction Slowness

[Mat]

When using Html.RenderAction("Show","Navigation") from a view
(Index.spark) to load navigation widget the page Home/Index takes
1.08secs to load,

However if I change so that Navigation is included/loaded on primary
viewmodel HomeIndexViewModel (and thus no RenderAction call) it takes
45msec.

I tried numerous version of Spark and different scenarios, what is
going on?

[Mat]

Reproduced this on an example project


MasterTemplate.spark - spark master tempalte file

some where in the markup add:

#Render.Action("Test","Home");

Keep it simple - do nothing:
public TestViewModel Test()
{
return new TestViewModel();
}


Without Render.Action page returns 15msec, with it returns
1.20seconds!

Using latest version from Teamcity codebetter (although it was same on
old version), asp.net mvc 2, .net 4.0.

[Mat]

Okay its not a Spark bug, sorry

Its a bug in RenderAction, when you have 12,000 routes it takes ages
(where as the incoming request is routed handled very quickly)

http://aspnet.codeplex.com/workitem/6597

[Rob G]

Ouch! Good spot.

I haven't come across this because I don't tend to use RenderAction any more. Instead I use the built in Spark partial support to good effect and sometimes (for some pretty sweet async behaviour) I use the Spark render view using Javascript functionality. I done a post on how to use it here: http://blog.robertgreyling.com/2009/11/teaching-javascript-how-to-render-your.html

Hope that helps,

RobertTheGrey

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