Fixes are available
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
APAR status
Closed as program error.
Error description
z/OS Connect consumes excessive CPU amounts. It was found that the method convertToJSONPrimitive is very expensive. In this testcase it accounts for nearly a third of the cumulative samples. This APAR is to optimize this method so it uses less CPU.
Local fix
NA
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server Liberty Profile for z/OS using z/OS * * Connect's data transformation support. * **************************************************************** * PROBLEM DESCRIPTION: High CPU caused by * * convertToJSONPrimitive when using z/OS * * Connect's data transformer. * **************************************************************** * RECOMMENDATION: * **************************************************************** High CPU usage is observed when processing a high volume of requests through z/OS Connect and when using z/OS Connect's data transformer. More specifically, the problem takes place because inefficient processing under convertToJSONPrimitive method, which is part of the data transformation tooling that z/OS uses. The tooling used to analyze the high CPU highlights the mentioned method as a potential cause.
Problem conclusion
Code was added to make convertToJSONPrimitive more efficient. The fix for this APAR is currently targeted for inclusion in fix pack 8.5.5.8. 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
PI50389
Reported component name
LIBERTY PROF -
Reported component ID
5655W6514
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-10-12
Closed date
2015-10-29
Last modified date
2015-10-29
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
LIBERTY PROF -
Fixed component ID
5655W6514
Applicable component levels
R850 PSY
UP
Document Information
Modified date:
28 April 2022