On 28/01/2008, h b <[EMAIL PROTECTED]> wrote: > Hello, I'm new to JMeter. I was wondering if you could share some of your > experiences with me. > > > > I'm testing a web application, I want to know how scalable the app is and > how well it performs. > > > > setup: The server & the jmeter-machine are seperate machines. >
Good, but ensure that the network is no worse than will be used when the service is live. > > I have set up a test, then I ramp up the number of threads. I started with > 10 threads 50 requests and worked my way up to 100 threads 50 requests. > ramp up period of 1 second for all test cases. Ramp-up should be increased for 100 threads, e.g. to 10 or 20, perhaps more. How many loops? It's important to run the test for long enough to reach a steady state. > Then I look at the result using the Aggregate Report and Graph Result > listeners. Summary Report is cheaper if you are doing live monitoring. > > > During the ramp-up what I'm seeing is that the throughput increases to 17 > requests per second and then tapers off. I'm guessing that this is a good > measure of the scalability of the application. Is that correct? > Most likely. > > > The other numbers that I find interesting are the median response time > (+deviation) and the 90% line: These numbers increase as the number of > threads increase. My understanding is that when I'm running the case 50 > threads, 50 requests what's happening is that for most of the duration of > the test the server is loaded with 50 requests. So the median response time > of X seems to suggest, that when the server is loaded with 50 requests the > average response time is X. Is this correct? Yes. > > The application that I'm testing needs to respond in less than 2 seconds > when it is processing 50-100 requests. Am I on the right track with my test > setup and am I understanding the results correctly? > Yes, it seems like it. Remember that 50 simultaneous requests represents a lot more than 50 users, once you take think-time into account. > > Thanks in advance. > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
