CA IDMS IUA EIUA

Re:Re: concurrent users

  • 1.  Re:Re: concurrent users

    Posted 04-14-2008 11:35 AM
    Hi Wayne:

    You're likely to get answers all over the board on this one, but perhaps
    that is exactly what you want.

    Other than some obvious restraints, like virtual memory, network
    bandwidth,
    CPU cycles, etc., I have never heard of an IDMS system that could not
    support the maximum concurrent number of users (albeit I had a lot of
    fun
    during the Cullinet years doing performance and tuning consulting to
    achieve
    exactly that result ;-}} ).

    That said, I suspect you may be asking about life in the 'new world',
    with
    web services, etc.

    I have personally simulated 10K users hitting an ASP page that
    connected/retrieved minimum data from an IDMS database. I don't have
    all
    of the details anymore, but the overall response was about 1.17 seconds
    running the simulation for about 15 minutes. This was done on CA iron
    in
    2003/2004 on a R14.1 CV.

    Of course, it was just a simulation, but it illustrates that you can
    push a
    rather large load through a CV if you have enough back-end resources.
    Again, just my 2cents...your results WILL vary...

    Please feel free to contact me offline (taschoenborn@msn.com).

    Tom Schoenborn
    TA Schoenborn & Associates LLC