PQ79252: CONNECTION BACKLOG PARAMETER FOR WEBSPHEE 3.5 APPLICATION SERVERS.


APAR

APAR status
Closed as program error.

Error description
WebSphere 3.5.x plugin needs to be enhanced with a configurable
parameter "Connection Backlog" - so that WebSphere administator
will be able to adjust the Connection backlog down to help with
failover when the application server becomes hung up or if
Application Server becomes overloaded.
Local fix
N/A.
Problem summary
****************************************************************
* USERS AFFECTED: Websphere Application Server 3.5 plugin      *
*                 users                                        *
****************************************************************
* PROBLEM DESCRIPTION: Server listen backlog can not be        *
*                      lowered.                                *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
By default, the application server's backlog is hardcoded
to be as large as possible for the target platform.  One
implication of setting the backlog so high is that it makes
it so a huge number of connections can build up to a
slow/locked-up application server before the connection
attempts fail over to another application server. Allowing
the users to adjust the backlog gives them rough control
over how many connections can be built up to an application
server before the plugins fail over to another server.
In most cases, it is far better to determine the cause of
the application server lockup/slowdown than to depend on
the backlog to trigger failover to the next application
server;  this fix was provided to help alleviate problems
while troubleshooting application server slowdowns/lockups.
Problem conclusion
Application server backlog now configurable globally, and
per clone.
Temporary fix
Comments
APAR information
APAR numberPQ79252
Reported component nameWAS ADVANCED SU
Reported component ID5648C8402
Reported release350
StatusCLOSED PER
PENoPE
HIPERNoHIPER
Submitted date2003-10-06
Closed date2004-03-15
Last modified date2004-03-15

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:APAR is sysrouted FROM one or more of the following:


Modules/Macros
plugin
APAR is sysrouted TO one or more of the following:Modules/Macros

Fix information

Applicable component levels
R350 PSYUP











Document Information

Product categories: Software, Application Servers, Distributed Application & Web Servers, WebSphere Application Server, General
Software version: 350
Reference #: PQ79252
IBM Group: Software Group
Modified date: 2004-03-15