APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: N/A .
Local fix
Setting sched_compat_yield=1 as recommended in the diagnostic guide
Problem summary
On linux platforms with the Completely Fair Scheduler (CFS) in default mode (sched_compat_yield=1) the JVMs default spinning behavior resulted in sub-optimal performance for some applications.
Problem conclusion
This defect will be fixed in: 6.0.1 SR4 7.0.0 SR3 . The default behavior was changed to provide better default performance for these applications. In rare cases where this change is not beneficial -Xthr:noCfsYield can be used to revert to the previous behavior.
Temporary fix
Comments
APAR Information
APAR number
IV30048
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
2012-10-12
Closed date
2012-10-12
Last modified date
2012-11-11
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:
22 February 2022