Download
Abstract
Performance of dynacache get operations in high volume environments is diminished.
Download Description
PK88824 resolves the following problem:
ERROR DESCRIPTION:
Dynacache gets are excessively synchronized causing thread lock outs during high load
LOCAL FIX:
none
PROBLEM SUMMARY
USERS AFFECTED:
All users of IBM WebSphere Application Server using dynacache.
PROBLEM DESCRIPTION:
Performance of dynacache get operations in high volume environments is diminished.
RECOMMENDATION:
None
In order to protect the cache instance dynacache uses synchronized blocks to allow synchronous access to get operations. This synchronization is excessive and severely slows down dynacache users during a stress situation.
PROBLEM CONCLUSION:
Excessive synchronization has been eliminated to allow get operations to perform at a more acceptable level.
The fix for this APAR is currently targeted for inclusion in
fix packs 6.0.2.39, 6.1.0.29, and 7.0.0.7. Please refer to the
Recommended Updatespage for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Prerequisites
None
Installation Instructions
Please review the readme.txt for detailed installation instructions.
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
Was this topic helpful?
Document Information
Modified date:
07 December 2019
UID
swg24025039