APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A . Big-Endian Linux on POWER only: there was an observable 5% throughput regression for JMS.
Local fix
-Xthr:spin1=151
Problem summary
Supposedly equivalent change from pragma to GNU embedded assembly caused different code being generated for the thread spinLoop which caused this performance regression.
Problem conclusion
Fixed by a different default spin1 value. . This APAR will be fixed in the following Java Releases: 8 SR6 FP20 (8.0.6.20) . 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
IJ28548
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-10-05
Closed date
2020-10-05
Last modified date
2020-10-05
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
[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSNVBF","label":"Runtimes for Java Technology"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130"}]
Document Information
Modified date:
06 October 2020