IBM 6.1.X manual Other Performance Tuning Options, Improving Portal Startup Performance

8

￿

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-performanceconfiguration 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

5 2

W E BS P HE R E P O R T AL V 6 . 1 T U N I N G G U I D E