PQ71127: PERFORMANCE DEGRADATION IN SERVICE LEVEL 4 WITH SMF 120 RECORDING FOR CONTAINER LEVEL INTERVAL RECORDS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() APAR status Closed as program error. Error description Starting with WebSphere service level W401400 with web container interval records, performance degrades significantly. This apar is to address the perfomance issue. Container interval records are captured for EJBs as well as web container records when the "J2EE Container interval records" box is checked in the SM EUI.Local fix Problem summary **************************************************************** * USERS AFFECTED: All users of WebSphere Application Server * * version 4.0.1 for z/OS and OS/390. * **************************************************************** * PROBLEM DESCRIPTION: APAR PQ71127 address performance issues * * that result when recording Web * * Container SMF data. * **************************************************************** * RECOMMENDATION: * **************************************************************** APAR PQ71127 addresses the following performance issues that result when recording Web Container SMF data: 1) When Web Container records are recorded, J2EE container records are also recorded because the Web Container is managed as an EJB. These duplicate records should be eliminated. 2) Constant Strings are translated to byte arrays multiple times.Problem conclusion The following Web Container SMF data recording performance issues have been addressed by APAR PQ71127: 1) Support has been provided to eliminated duplicate Web Container SMF data records. 2) Support have been modified to cached byte arrays, thus eliminating multiple translations. APAR PQ71127 is associated with SERVICE LEVEL W401504 of WebSphere Application Server version 4.0.1 for z/OS and OS/390.Temporary fix Comments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: UQ76441 Modules/Macros
|
Document Information |
Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server for z/OS
Operating system(s):
Software version: 401
Software edition:
Reference #: PQ71127
IBM Group: Software Group
Modified date: Jun 5, 2003
(C) Copyright IBM Corporation 2000, 2006. All Rights Reserved.