I am a very new in QA, and I was hired to do some Web Load Capacity Tests. I download some free tools like WCAT and OpenSTA to try and they are cool. But I have some questions and hope somebody could answer me:
What do you look at the test result? I test my Web server with up to 250 users and seem like it works fine. So what do I need to check if my web server got problem when user go up, and how can I check how many users my server can handle?
To find the breaking point of your infrastructure, you need to keep adding users until the response time is unacceptable. I use the term 'unacceptable' as a catch-all phrase to describe the graph one sees as the response time curve increases along the y-axis.
Generally speaking, your function as a tester is to find the problems not fix them, unless you happen to have the technical wherewithall to do so. As you gain experience, you might and probably will be able to offer recommendations to the people with whom you are working.
Gretchen, I have some docs that I have collected over the years that will answer your questions. If you want to drop me an email I will send them to you. Other wise you might want to read "Scaling for E-Business".