advanced asp.net improve performance

Question

asked for help on my application , that's run on windows server 2003 and iis 6.0 ,this applications gross now , users now about 60,000 per day. and that what i did to make it faster

a.SQL server 2005 :

• all query i convert it to storedprocedure.
• all tables have indexes on FK.
• most on select statement from view.
• never use * in all command.

but still have dead lock error

B. js file :

• include it all in one file
• optimize file

c. css file:

• optimized in one file

D.asp.net 2.0 :

• most of default page run on json object by calling web method and render page or usercontrols.
• all photo i saved on server max size to it 20KB.
• enable caching

E.windows server 2003:

• when i use performance tool in windows 80% of it come from sql

any suggest to improve performance of this application

Answer 1

This is a broad question. There are lots of way you can do performance improvement following link has some best practice.

http://www.dotnetjalps.com/2009/05/increase-performance-in-aspnet.html

Try REDGATE ANTS profiler for profiling your application and see where the bottleneck is. http://www.red-gate.com/products/dotnet-development/ants-performance-profiler/

For memory leak use dottrace memory profiler and see how your application doing. http://www.jetbrains.com/profiler/

You can also check performance counter via process explorer on your server. http://msdn.microsoft.com/en-us/library/fxk122b4(v=vs.100).aspx

For stored procedure you can measure time via direclty executing query string. If any stored procedure is taking more then a second then you should refactor that.

Here are few links that might be usefull for you.

http://www.codeproject.com/Articles/196378/Best-Practices-to-Improve-ASP-NET-Web-Application

http://www.codeproject.com/Articles/23306/10-ASP-NET-Performance-and-Scalability-Secrets

http://msdn.microsoft.com/en-us/library/ff647787.aspx