Performance testing where every VU uses own cookie

I’m currently working on a collection, and I try to do a performance test. I run the test with 20 virtual users for 10 minutes. My requests however keep failing after the request has ran 1 time. I think it’s due to the fact that the VU all use the same cookie, containing unique id’s that should not be used by the other VUs.

So my questions are:

  • Is my assumption correct, that every VU uses the same cookie, and thus using the same session id for example?
  • If so, how can this problem be solved so that every VU uses their own cookie/session id?

Platform details:
Postman Desktop Version: Version 10.21.11
OS: MacOs Sonoma 14.1

Thanks in advice :smiley:

Hey @jdtjee! Thanks for testing and reporting this.

From my initial assessment, it seems unlikely that the VUs are sharing the cookies. We will take a little time to run experiments to check this further.

I have a couple of questions for you:

  1. What made you think that all of the VUs are using the same cookie?

  2. Can you tell us about the errors you are seeing? We would like to know what is the response code you are receiving and is it for all the requests after the first one?


This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.