PQ80436: Performance loss after upgrading from 3.5.x to 4.0.5 level when using trade primitives PingServlet2Servlet and PingServlet2Jsp.. | |||||||||||||||||||||||||||||||||||
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![]() APAR status Closed as program error. Error description interim fix generated already to resolve the way we handle the print writer. The fix is now using a flag to determine if print writer has been closed. This allows code to avoid a print writer flush, which was previously causing an I/O error, but can now be avoided.Local fix None availableProblem summary **************************************************************** * USERS AFFECTED: Users of WebSphere Application Server * * 4.0.5, 4.0.6 and 4.0.7 versions with * * applications where a servlet forwards to * * another servlet. * **************************************************************** * PROBLEM DESCRIPTION: Servlet handling performance degraded * * under a servlet forward to another * * JSP/Servlet scenario * **************************************************************** * RECOMMENDATION: * **************************************************************** Since V4.0.5, there is performance degradation in the servlet forward function. The degradation is caused by excessive IOExceptions when closed printWriters are being flushed.Problem conclusion The problem is fixed by checking if the printWriter is closed or not. This will prevent the unnecessary flushing of closed printWriters.Temporary fix testFix driver posted in pq99999 site. Waiting for customer feed backComments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: Modules/Macros
SRLS
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Document Information |
Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server > General
Operating system(s):
Software version: 400
Software edition:
Reference #: PQ80436
IBM Group: Software Group
Modified date: Nov 6, 2003
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