PK76241; 22.214.171.124: SIP proxy udp channel deadlock while under load
After running a heavy load for a period of time, Session Initiation Protocol (SIP) proxy stops responding to SIP requests.
PK76241 resolves the following problem:
Running the SIP proxy under load for a period of time leads to a deadlock in the UDP Channel.
All users of WebSphere Application Server V7.0
After running a heavy load for a period of time, Session Initiation Protocol (SIP) proxy stops responding
to SIP requests.
There is a small timing window in the UDP channel that can possibly cause a deadlock between two synchronization blocks. This seemed to only occur at high data rates where the time window is decreased between SIP packets.
The code was rearranged to move one synchronization block outside of the other one. There is now no way for a deadlock to occur with these two synchronized objects.
The fix for this APAR is currently targeted for inclusion in fixpack 126.96.36.199.
Please refer to the Recommended Updates page for delivery information:
Please download the UpdateInstaller below to install this fix.
Please review the readme.txt for detailed installation instructions.
|Download||RELEASE DATE||LANGUAGE||SIZE(Bytes)||Download Options
What is Fix Central(FC)?
What is DD?
|188.8.131.52-WS-WAS-IFPK76241||12/9/2008||US English||26757||FC FTP DD|
Contact IBM Support using SR (http://www-306.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).
|Application Servers||WebSphere Application Server for z/OS||z/OS||7.0|
Problems (APARS) fixed
More support for:
WebSphere Application Server
Software version: 7.0, 184.108.40.206
Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows
Software edition: Network Deployment
Reference #: 4021632
Modified date: 2008-12-11