Load balancing using SDM Web Engines and Web Directors.
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Load balancing using SDM Web Engines and Web Directors.


Article ID: 199780


Updated On:


CA Service Desk Manager CA Service Management - Service Desk Manager ServiceDesk


How does SDM Load balancing work between multiple web-engines.


Service Desk Manager v14.x and higher


  1. This article explains how to configure multiple web-engines (ex: pdmweb.exe ,pdmweb1.exe and pdmweb2.exe) on a single application server successfully: How to Configure Multiple CA SDM Web Engines on Application Servers?

  2. When You launch the SDM URL "http://server:8080/CAisd/pdmweb.exe"-> it will direct you to either
    Based on the Load on each web-engine.

  3. To check the load, run the "pdm_webstat" command. It will show cumulative sessions, most sessions at a time and current active sessions on each web-engine.
    Below is an image that shows an example with single Login on each web-engine.

  4. If "cummulative Sessions so far" from the above command output is equal on all web-engines then
    1st Login  will direct to: pdmweb.exe
    2nd Login  will direct to: pdmweb1.exe
    3rd Login  will direct to: pdmweb2.exe

    If "cummulative Sessions so far" -> Is not equal on each web-engine -> then all the login request will be directed to the web-engine which has the fewest logins until the sessions are equal on each web-engine.


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