I am using Drupal 6 with the Open Atrium distribution. Is there a problem if the same user connects from more than 100 different computers at the same time? At the moment I am unable to do a test but I would like to know if I can encounter any problem. So far I did try with 10 PCs and no problem whatsoever. Also is there a limit that I have to remove or by default there is no limit? Thank you.

1 Answer 1


There is no hardcoded limit, but sessions by default are kept in database, so user<->session queries will get slow like a hell pretty soon. Move sessions to memcache or apc if possible, and consider giving each of those 100 guys his own account.

  • Thank you for the answer, unfortunately I cannot give them a personal account for reasons that I can't explain here (it's not a technical reason anyway). Perhaps I need to ask another question but do you know where I can find information regarding moving a table to APC? Thx.
    – raz3r
    Commented May 17, 2013 at 9:50
  • Google. Really. It's so easy to google for drupal's sessions in apc that I refuse to do it for you.
    – Mołot
    Commented May 17, 2013 at 9:51
  • Forgive my question but what is the difference between having 100 different accounts and having a single account? In the end if all of these users are connected at the same moment what will change in the session table?
    – raz3r
    Commented May 20, 2013 at 13:56

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