We are a very experienced .NET development house. Since discovering DNN we have almost aligned all our web development projects to be based on the DNN framework. Me and the development team have now developed about 10 sites based on DNN (from 3.1.0 up until 3.3.2).

I would say we have about a years in depth experience of DNN, developed very custom large community sites on DNN and small company sites. The beauty of DNN is how powerful it is and the endless possibilities for scalability.

The down side it would seem is speed. DNN just seems to be terribly slow compared to a total bespoke web application. I have noticed this particularly when doing anything in the admin side. Updating site settings or loading and editing stuff in the Text/HTML module just takes ages. Now for us this is a problem; we can offer clients very powerful CMS based on DNN but at the expense of speed.

Does anyone agree with this? I have also recently noticed a tremendous slowdown in the dotnetnuke site itself. Is this as a result of the upgrade?

My opinion is that DNN needs a document that specifies clearly do's and don'ts. Things that make sites slow etc. What are reccommended hosting requirements? Especially from a custom module perspective. The dnn technology itself has been around for years, but I am pretty sure that speed is an issue in general. I am just not totally convinced about it being as fast as any other site out there. Does the core team have any plans to tackle performance issues?

about SQL connections, since all the connections would be using the same SQL Connection string, i doubt if it is not optimal. SQL should itself implement connection pooling in case connection string is identical.

i had been observing very high CPU utilization myself. I have implemented the following:

1. Turn off all schedules by Scheduler Mode to Disabled
2. Module caching to Disk
3. Site log storage to File System

I have also purged my site log history manually to reduce the DB size 3 GB to 40 MB  :)

this has speeded up my site significantly.

lemme know if these things work out for you.. my experience is based on DNN 3.3.3

cheers

Abhishek

ad 1) only, if you don't need them

ad 2) this is preferable, if you are in webfarm or run out of memory, otherwise it will decrease performance

ad 3) in this case, you need 3rd party tool for log analysis, as the DNN log viewer does not read log files.