A fix is available
APAR status
Closed as program error.
Error description
When sending com.ibm.ws.cache.IdObject across DRS a performance degradation occurs.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere Applicaiton Server * * version 6.0.2 using dynamic cache function * * with replication enabled. * **************************************************************** * PROBLEM DESCRIPTION: Deserialization of * * com.ibm.ws.cache.IdObject is very * * slow and hogs all the CPU. * **************************************************************** * RECOMMENDATION: * **************************************************************** The deserialization of com.ibm.ws.cache.IdObject objects by the data replication service (DRS) is first done by the current thread classloader and if that fails it is done using the server classloader. If the IdObject has reference to custom java objects then the deserialization attempt using the current thread classloader would always fail. This results in IdObject.deserialize() taking all the CPU. To fix this we will first use the server classloader to deserialize IdObjects if the following custom property is set: com.ibm.ws.cache.CacheConfig.useServerClassLoader=true.
Problem conclusion
This fix improves the performance when custom java objects are used as cache keys. The fix for this APAR is currently targeted for inclusion in fixpack 6.0.2.13. Please refer to the recommended updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PK23535
Reported component name
WEBSPHERE BASE
Reported component ID
5630A3600
Reported release
60A
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2006-04-18
Closed date
2006-05-10
Last modified date
2006-05-10
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
DYNACACH
Fix information
Fixed component name
WEBSPH APP SERV
Fixed component ID
5724J0800
Applicable component levels
R60A PSY
UP
R60H PSY
UP
R60I PSY
UP
R60P PSY
UP
R60S PSY
UP
R60W PSY
UP
R60Z PSY
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.0","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
19 October 2021