APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A .
Local fix
The issue can be worked around using the -Xnoclassgc option, however this will increase memory usage over time. Another workaround is the option -XX:-EnableHCR, however this will disable support for Hot Code Replace.
Problem summary
The problem is caused by increased overhead when unloading classes, due to inefficient bookkeeping clean up related to the unloaded classes.
Problem conclusion
The JIT has been improved to reduce the overhead of class unloading and recover the lost performance. . This APAR will be fixed in the following Java Releases: 8 SR5 FP6 (8.0.5.6) . 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
IJ02285
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-11-29
Closed date
2017-11-29
Last modified date
2017-11-29
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 November 2017