Changing the session pool resizing interval

Resizing the pool, which is done based on the number of active users, helps ensure that resources are allocated correctly.

About this task

When the pool grows, new IBM® Rational® Synergy sessions are started. When it shrinks, existing Rational Synergy sessions are dropped. A frequently resized pool more closely matches the current system demand. However, resizing the pool uses resources because the server might need to start or shut down sessions.

The following examples explain how sessions are started and stopped when the session pool is resized. Resizing is always constrained by the minimum and maximum session settings.

For any two hosts A and B on a given database:
  • Starting sessions
    • If hosts A and B are less than or equal to the threshold, or both are greater than the threshold, the higher priority host takes precedence. If their priorities are equal, the host with the lowest load (number of sessions) takes precedence.
    • If exactly one host is above the threshold, the other host takes precedence.
  • Stopping sessions
    • If hosts A and B are less than or equal to the threshold, or both are greater than the threshold, the lower priority host takes precedence. If their priorities are equal, the oldest session takes precedence.
    • If exactly one host is above threshold, that host takes precedence.

Procedure

To change the session pool resizing interval:

  1. In the Admin interface, click System Administration.
  2. Click the Server tab.
  3. Type the minute interval for changing the number of available Rational Synergy sessions.
  4. Click Save.

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