PM76732; 8.5.0.1: Servlet loading is slow on the Liberty profile server

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Abstract

Application startup is slow for web applications using Servlet versions prior to 3.0

Download Description

PM76732 resolves the following problem:

ERROR DESCRIPTION:
Application startup is slow for large applications.

LOCAL FIX:

PROBLEM SUMMARY

USERS AFFECTED:
All users of IBM WebSphere Application Server Liberty Profile

PROBLEM DESCRIPTION:
Application startup is slow for web applications using Servlet versions prior to 3.0

RECOMMENDATION:
At the time of closing this APAR, for best performance the recommendation is to install both this fix and also the fix for APAR PM77826. As an additional note, setting the following entry in the server.xml moves some of the first servlet load response time to application start time.
<webContainer deferServletLoad="false"/>

Where large applications are used, application startup is slow for applications that do not make use of Servlet 3.0 annotations. Applications utilising Servlet specifications prior to 3.0 or with metadata-complete="true" set in the web.xml will exhibit this problem.

PROBLEM CONCLUSION:
Annotation scanning is no longer performed for applications not using Servlet 3.0 annotations.

The fix for this APAR is currently targeted for inclusion in fix pack 8.5.0.2. Please refer to the Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?uid=swg27004980

Prerequisites

None

Installation Instructions

Please review the readme.txt, which is included with the download file, for detailed installation instructions.

Note: The fix available for download in this document can only be applied to a Liberty product installed with IBM Installation Manager. If you require a fix for an Liberty product installed from an archive please check for fix availability here: http://www.ibm.com/support/docview.wss?uid=swg1PM76732.

Download package


Download RELEASE DATE LANGUAGE SIZE(Bytes) Download Options
What is Fix Central (FC)?
What is DD?
8.5.0.1-WS-WASProd_WLP-DistOnly-IFPM76732 21 Dec 2012 US English 1830288 FC DD
8.5.0.1-WS-WASProd_WLP-OS390-IFPM76732 21 Dec 2012 US English 1830013 FC DD

Technical support

Contact IBM Support using SR (http://www.ibm.com/software/support/probsub.html), visit the WebSphere Application Server support web site (http://www.ibm.com/software/webservers/appserv/was/support/), or contact 1-800-IBM-SERV (U.S. only).

Problems (APARS) fixed
PM76732

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Document information


More support for:

WebSphere Application Server
Performance and High CPU Utilization

Software version:

8.5.0.1

Operating system(s):

AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS

Software edition:

Base, Developer, Express, Network Deployment

Reference #:

4034233

Modified date:

2013-07-11

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