WebSphere Virtual Enterprise (formerly Operations Optimization), Version 6.1
             Operating Systems: AIX, HP-UX, Linux, Solaris, Windows, z/OS


Autonomic request flow manager cell-wide custom properties

You can use these cell-wide custom properties to configure memory overload protection.

Configuring cell-wide custom properties for memory overload protection

Unless otherwise specified, create these custom properties on the cell using the following steps. From the administrative console:
  1. Expand System administration > Cell > Custom properties > New.
  2. Type the name of the custom property. See following information for specifying the value.
  3. Click Apply and save your changes.
Table 1. Custom properties for configuring memory overload protection
Name Cell location Default Description
MOP.AveragingWindowInMS

Application server

180000

The averaging window in milliseconds used by memory overload protection. This time interval should be at least as long as the lifetime of 95% of the HTTP sessions, SIP dialogs, and application sessions. If the time interval is too short, memory overload protection may not protect against memory overload. If the time interval is much longer than the lifetime of these objects, memory overload protection will still protect against memory overload but it will take memory overload protection longer to ramp up to learn the maximum rate.

MOP.InitialMaxRatePerSec

Application server

1

If there is no persisted maximum rate value, this value is used as the initial maximum rate.

AC5.BurstFactor

On demand router (ODR)

3

This value affects how tolerant memory overload protection is to bursts of traffic. If the maximum rate is 1 per second and the burst factor is 1, then one unit of non-affinity traffic is admitted if it did not admit one in the last second. If the burst factor is 3 however, it admits 3 every 3 seconds.






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Last updated: Oct 30, 2009 6:15:26 PM EDT
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