I work as a consultant at a company that have around 30 reports in a reporting services 2005 server. All of the reports use around 10 parameters to change the data loaded into the report. The parameters is depending on eachother also.
The problem is that the reports causes long loadtimes for booth changing parameter and processing/loading the final report. On top of this the report generate a big viewstate around 110 000 char long, and this probably impact the long loading time when report is being postbacked to server.
I have checked t-sql and stored procedures processing time and they look normal when i use sql profiler. So it must have to do with the rendering process and postback of report with the heavaly viewstate...
Can you disable viewstate in reporting services reports for different controllers like you can in asp.net webforms ? Or do end user have to live with the long loading times.