[clif] Re: RE: Re: httpInjector save form fields??

[Bruno Dillenseger <bruno.dillenseger@xxxxxxxxxxxxxxxxxx>]

Title: Votre signature email Orange (en France)

Dam, M.E. van (0768655) a écrit :

Hello,

First of all, thanks for your reply..

  

I'm pleased that your mail is explicitely addressed to me, but probably it would be more 
correct to talk to the CLIF community... ;-)
    

I asked sort of the same question on 18 december. This was with an hotmail.com email address. 
Your ft group mail probably blocked it. I have been reading this mailinglist since then, 
I have seen that you Bruno are answering all questions from guests. 

Anyway, I took CVS snapshot of yesterday and indeed no problems with 200 limit. Great! 

I'm graduating on the subject, and for a demonstration I will use Clif Project.

Here is what I have: 
I have one computer with JBoss AS and example website deployed. (Seam Framework DVD-store) 
In my demonstration I like to `test' this website. Because of problems with `state control' 
Feature of this website, I made a new and smaller scenario. This time only getting `homepage' 
using 1x GET.

After a few tests I made a `load profile' like with 0 - 60 seconds from 0 up to 100000 users.
  

This seems a little bit steep to me: that makes more than 1600 new virtual users per second.

And then from 60 - 120 seconds a constant of 100000 users. But I suspect this is not happening 
when I do the test. If I look at results I can only see it did 14000 actions. How does this 
work? Can I see it didn't reach the 100000 users???? 
  

It reached 100000 virtual users, but they don't behave as expected (e.g. in terms of number of request/second) because you are probably asking too much and you are lacking computing resources. In our typical Web test campaigns, our ISAC scenarios feature hundreds of virtual users with one request/second throughput for each vUser. ISAC has almost no limit in terms of number of virtual users, but it only means that the execution engine (when properly tuned) has a negligible overhead; there is no magic: no injection computer has an infinite capacity.

My advice is to have a look at the ISAC execution engine appendix in the user manual. You will see there that you can get some alarms when the ISAC execution engine is saturating.

What is the behavior of your virtual users?

Is it possible to use Clif for to inject so many users the website goes down? ( would be nice for 
demo, normally all students when making a demonstration for graduating hope there pc won't crash, 
in my presentation, I then hope it will crash, then it would be the other way around:) )
  

The solution is to add more CLIF servers in your test plan, and/or to get a dynamic web page, which is much more resource-consuming than a static page.

For second test I used a third PC for getting an extra injector. But when I'm deploying in Clif 
it says 'file not found' (i'm sure the file is present)
  

Which file?

I'm a java programmer, the only thing is I was advised to not program new stuff by my teacher. 
Due to big delays already :(
  

I'm currently considering implementing this feature, since it is of key importance for us too.

Best regards,

-- Bruno.