APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A . Performance regressions were experienced in workloads using the -Xnocompactgc option when compared to pre 2.6 VMs.
Local fix
Problem summary
New heap management algorithms changed the ordering in which memory was allocated on the heap. This caused higher heap fragmentation in cases where compaction is not used. Higher heap fragmentation was making it impossible for Gencon to tenure large objects.
Problem conclusion
This defect will be fixed in: 6.0.1 GA FP1 . The heap management algorithm was changed to alleviate fragmentation when compaction is not used. . To obtain the fix: Install build 20110210 or later
Temporary fix
Comments
APAR Information
APAR number
IV01625
Reported component name
J9 COMMON CODE
Reported component ID
620700127
Reported release
260
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-06-12
Closed date
2011-06-15
Last modified date
2011-06-15
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
J9 COMMON CODE
Fixed component ID
620700127
Applicable component levels
R260 PSY
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