APAR status
Closed as program error.
Error description
Error Message: In large application server environments, performance throughput bottlenecks may be observed in the J9 JVM with large pages enabled. . Stack Trace: N/A .
Local fix
Problem summary
Several performance bottle necks in large application server environments have been observed and attributed to the existing support for large pages within the JVM. Also, several deficiencies with block frequency heuristics used as part of the JIT compiler component have also been identified.
Problem conclusion
This defect will be fixed in: 7.0.0 SR2 . The JVM has been modified to address the large page support issues presented and to improve the identified deficiencies in block frequency heuristics.
Temporary fix
Comments
APAR Information
APAR number
IV18641
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
2012-03-30
Closed date
2012-07-17
Last modified date
2012-07-17
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
UP
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Document Information
Modified date:
21 February 2022