multiple quovadx sites on same server: seperate JVMs ??

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  • #49599
    Sundeep Kumar
    Participant

    If single instance of the server hosts multiple sites, does each site start its own jvm (java virtual machine) or are sites more like logical entities within the server so they run in the same JVM instance, kind of like in bea weblogic that can hosts multiple ‘sites’ in the same jvm instance ?? I am J2EE consultant and I have been asked to investigate the perfomance impact of having multiple sites on the same instance and I am starting by trying to understand if a ‘site’ is a logical entity within a JVM instance. Any pointers will be appreciated. I have been asked this question from a purely J2EE perfomance point of view and I know that running multiple JVMs can be a drain. Most analysts in our shop who deal with this product see it from a functional point of view and I have to understand it from a J2EE server point of view.

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    • #62693
      John Hamilton
      Participant

      I believe and I am sure one of the gurus will correct me.

      That you start one JVM client and each site is a logical unit with in it.

      All I can tell you I have run multiple sites for many years and have been very successful with it.

    • #62694
      Steve Carter
      Participant

      Not a guru, but I agree with John.

      We currently run 125 production sites on a single server with no performance issues.

      Steve

    • #62695
      Nate Kruse
      Participant

      Steve Carter wrote:

      Not a guru, but I agree with John.

      We currently run 125 production sites on a single server with no performance issues.

      Steve

      Wow  😯 , please tell me that you have 125 threads, not sites.  If that isn’t misspoken, how do you manage all of those sites?

    • #62696
      Steve Carter
      Participant

      No, that’s correct.  125 sites.  We have over 2600 threads.  We monitor our sites using customized alerts and in-house written monitoring tools.  We don’t have too many issues that require hands-on intervention.  Most of our common issues are handled programatically.

      Steve

    • #62697
      Nate Kruse
      Participant

      Steve Carter wrote:

      No, that’s correct.

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