I'm trying to load test my asp.net application. I've tried using MS ACT and Red Gate's Ants Load tools, but using either one causes my app to generate alot of exceptions. I'm recording a script and running it with 5 simultaneous connections. The exceptions only seem to be occuring in a couple of pages and I'm not sure why since this does not happen in normal operation(I know - stress testing isn't 'normal operation'). This may seem silly, but is it simply because my app uses forms authentication and I really need separate scripts for each virtual user? If this is the case, why isn't it effecting all pages?
I'm trying to figure out if the load tools have exposed a serious issue in the application or if some scenerios just can't be included in the testing. I know I'm not giving much detailed info here, but I just want to get some direction from anyone with experience using stress testing tools.