Miguel,
What have you tried to do to measure your application performance so
far?
Getting an outside measure of how fast a page loads will not tell you a
great deal. The detail you need is how long certain actions take to
run within each page and the size of the page is once it is loaded.
If you are showing a very large set of data in a GridView it is likely
your ViewState is also very large, which makes the page size very
large. That will cause the page to take a while to load and more time
to render the page.
What you can do is write the current time to the log with the current
time along with keywords to tell you where the code is at that point.
You should be able to pinpoint the spots where performance is being
affected.
Once you have found the source of your issues, you can try using
features like the OutputCache.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/cpconOutputCache.asp
You can also use System.Web.Caching directly.
http://msdn2.microsoft.com/en-us/library/ms178604.aspx
The most common slow down for a page is database access and I/O.
Fortunately the caching and dependency features of ASP.NET 2.0 give you
great tools to speed things up.
Brennan Stehling
http://brennan.offwhite.net/blog/
