We’ve been having some trouble with our main ASP.NET application in work recently. (It’s our intranet, basically.) It’s been growing a lot lately, with more and more functionality being added to it, and more and more users accessing it. It’s running on a Windows 2000 server under ASP.NET 1.1. I have a new server set up that I’m planning on moving it to — it’s running Windows Server 2003, and I was planning on upgrading the app to ASP.NET 2.0 before moving it over. Given the performance problems, though, and my general lack of spare time, I’m thinking about moving it over as is, just to see if that helps, then maybe upgrading it to 2.0 later, when I have some time.
I know that there’s probably a lot I could do to tweak the performance on this application. We’ve done very little in the way of performance-tuning on our ASP.NET stuff. I discovered a book from Microsoft yesterday, Improving .NET Application Performance and Scalability, which I think should be some help in guiding us through some tuning and optimization. The book is available as a PDF download, and it’s about 1100 pages. I read through a couple of chapters tonight, and it’s definitely got some useful advice on ASP.NET, ADO.NET, and SQL Server tuning. There’s plenty more in there too, but that’s all I’ve had time to read so far. I’m finding it useful enough that I went over to Amazon and ordered a used copy of the dead tree version. Highly recommended, if you need to do some .Net tuning, and you’re not sure where to start.