PQ74668: Slow startup of J2EE client due to overhead of WCCM | |||||||||||||||||||||||||||||||||||||||||||||||
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![]() APAR status Closed as program error. Error description The Websphere 5.0 J2EE launchClient adds a considerable amount of startup-time to the execution of a J2EE java client. A significant amount of this time is consumed by the continual expansion of the EAR file. Both Version 4 and 5 exhibit this problem to the point that the launchClient is basically unusable. At a minimum, the launchClient should be able to take a parameter that inhibits the expansion of the EAR file and a parameter that provide the location (cached) of the expanded EAR (or only expands it if the "cached" content is out-of-date.Local fix Problem summary **************************************************************** * USERS AFFECTED: WebSphere Application Server users of * * applications that initialize with WCCM. * **************************************************************** * PROBLEM DESCRIPTION: The modeling framework of WCCM has a * * large memory footprint which causes * * an impact to performance. * **************************************************************** * RECOMMENDATION: * **************************************************************** Slow performance was observed when using WCCM. For example, Java Clients using LaunchClient incurred a delay at startup due to the number of objects that had to be initialized.Problem conclusion A new open source modeling framework called EMF (Eclipse Modeling Framework) is used by next generation WCCM to decrease the memory footprint and initialization time. Performance improvement varies depending on number of model packages initialized.Temporary fix Comments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: Modules/Macros
Publications Referenced
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Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server > General
Operating system(s):
Software version: 00A
Software edition:
Reference #: PQ74668
IBM Group: Software Group
Modified date: Jun 10, 2003
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