You can simulate the number of users by increasing the thread count in the Thread Group node. I disagree with this approach however. Every manager in the world says 'how many users can it handle?'. This question doesn't make sense if your wondering about performance of a new system. The best approach is to run a tool like JMeter with a decent load, not a cumbersome one, and view the aggregate report. Look for the pieces of the code that take the longest (if they are distributed then it could skew the results. This is assuming all is on the same box). This should tell you where to focus your performance tuning. Then get a tool like Optimizeit and run JMeter. JMeter should have a good test plan of all/most of your functional areas. This will feed Optimizeit with all the areas of your code and then you can look at where you spend most of your time and performance tune those. After you are done performance tuning based upon the most used areas of your code, there's not much else you can do. Think about it. If that functionality is needed and you ran all the profiling tools you can and tweaked it like mad then you are done. There is no need to run the user tests to view performance. What you would be looking for now is fault tolerance. In other words, how many users can my system handle now that it is as fast as time/budget/functional completeness will allow? Here, you increase the number of users until your response times taper off considerably (It usually remains rather constant and then gets bad FAST). At that point of inflection is where, IMHO, you should buy another box. NOT PAST THE POINT OF INFLECTION. Clustered systems such as Weblogic, JBoss 3.0, etc all work great and are made for such a case. If your not doing J2EE then a simple DNS round robin or hardware load balancer should do the trick (going to multiple machines of course). I have a feeling I'm going to get some flame over this....I have done a lot of different kinds of large systems and when it comes to money ($ spent vs value) this approach seems to be the best bang for your buck. Mike
----- Original Message ----- From: "Benoit ROBERDEL" <[EMAIL PROTECTED]> To: "JMeter Users List" <[EMAIL PROTECTED]> Sent: Thursday, February 06, 2003 2:01 AM Subject: RE: http proxy server option not working Hi, I'm new user of JMeter and there is some functionnalities I still don't understand. First of all, I don't totally understand the througput graph. does it meens the number of request to the server or the estimated queue or anything else??? What I wan't it's to determine the max number of user my server can accept. How can I plan to test it? Thanks for your help. Beno�t --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
