On 26/09/2008, David Heath <[EMAIL PROTECTED]> wrote: > Hi, > > Hello I'm new to JMeter and this mailing list so firstly, thanks for a > great tool! I'm a web software developer and I'd like to use JMeter to > load test a web application I'm developing. > > I have set up a test which is intended to model a representative > sample of user behaviour. The test performs a user login and various > common actions. I want to use this to answer the question "what is the > mean response time at a given level of concurrent users?". To this end > I ran the test repeatedly with thread numbers from 2, 4, 8, 16, 32, > 64, and then looked at the results. > > The answer I got was that at loads of 16 or more threads I was getting > response times of 6 seconds or more. This is clearly not acceptable > for any application. So, before I start digging into my code to try to > find out what's going on, I wanted to sanity check that my model is > reasonable. One area that I'm not sure about is the introduction of a > random delay between user requests. I did this by adding a Guassian > Random Timer as a child of the root Thread Group. If understood > correctly, this random delay will get applied to all HTTP samplers in > the tree. I used a mean of 700ms and standard deviation of 400ms. > > So, I have two questions: > 1) have I understood correctly that the timer gets applied to the > whole tree .. I don't need to add one for each HTTP sampler?
Yes. No. > 2) do the figures of mean 700ms and stdev 400ms seem reasonable? I > wonder if it's a bit too short? What are the users likely to do? That depends on how much info is in your pages. > Thanks in advance for any advice you can give. > > David Heath > http://davidheath.org/ > > --------------------------------------------------------------------- > 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]
