APAR status
Closed as program error.
Error description
Error Message: The customer will report reduced throughput when running workloads making heavy use of the Java math libraries on Java 8 when compared with Java 7.1. . Stack Trace: N/A .
Local fix
Problem summary
In Java 8 the JIT optimizer was enhanced to better optimize loops. These changes had a negative impact on on a subset of very tight mathematical loops.
Problem conclusion
The JIT optimizer has been enhanced to improve the performance of the math functions. . This APAR will be fixed in the following Java Releases: 8 SR3 (8.0.3.0) . Contact your IBM Product's Service Team for these Service Refreshes and Fix Packs. For those running stand-alone, information about the available Service Refreshes and Fix Packs can be found at: https://www.ibm.com/developerworks/java/jdk/
Temporary fix
Comments
APAR Information
APAR number
IV83133
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-03-29
Closed date
2016-03-29
Last modified date
2016-03-29
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
JIT
Fixed component ID
620700124
Applicable component levels
R130 PSY
UP
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
29 March 2016