APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A . JAXB unmarshal performance regressed due to default GC policy change to -Xgcpolicy:gencon from -Xgcpolicy:optthruput in Java 6.0.1.
Local fix
Depending on the application, a customer may elect to run with -Xgcpolicy:optthruput to alleviate the performance bottleneck.
Problem summary
Extra overhead is spent in write barrier helpers jitWriteBarrierStore* related to GC policy gencon.
Problem conclusion
This defect will be fixed in: 6.0.1 GA FP1 . The JVM has been updated to reduce the overhead associated with the write barrier helper routines. . To obtain the fix: Install build 20110227 or later
Temporary fix
Comments
APAR Information
APAR number
IV02042
Reported component name
JIT
Reported component ID
620700124
Reported release
260
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-06-16
Closed date
2011-06-16
Last modified date
2011-06-16
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
R260 PSY
UP
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