IBM WEBSPHERE 6.1.X - Manual (Page 57)

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W E B S P H E R E P O R T A L V 6 . 1 T U N I N G G U I D E
OTHER PERFORMANCE TUNING OPTIONS
In addition to the scenarios discussed above, WebSphere Portal has some other tuning
options which may be useful in specific scenarios. These options include:
•
Improving portal startup performance
•
Managing the retrieval of user attributes
•
Use of dynamic content features
Improving Portal Startup Performance
WebSphere Portal 6.1 introduced a “development mode” that greatly improves startup
performance, so that WebSphere Portal will start more quickly. This can be very useful for
development environments where WebSphere Portal must be stopped and started
frequently.
However, it’s important to note that this mode is only meant to be used for development or
test environments, not production or performance benchmark environments. Development
mode turns on lazy-start for almost all applications in WebSphere Portal, and this can cause
a performance impact the first time an application is accessed under load. Development
mode also changes the way the JVM is started to give better startup speed at the cost of
reducing capacity under load.
To switch to development mode, run the enable-develop-mode-startup-
performance configuration task to complete the configuration and optimize the portal
startup. The changes can be reverted to the original values using the disable-develop-
mode-startup-performance configuration task.
For more information, please visit the following URL:
http://publib.boulder.ibm.com/infocenter/wpdoc/v6r1m0/index.jsp?topic=/com.ibm.wp.ent.doc/install/inst_opt.html
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