A fix is available
APAR status
Closed as program error.
Error description
The system paged out 4k pages even though there was an adequate donor pool of 64k pages. Further investigation showed that the system was trying to use reserved frames instead of demoting 64k pages.
Local fix
Turn off 64K pages completely or turn off MPSS.
Problem summary
4K page working storage pages being stolen when there are large number of 64K free pages.
Problem conclusion
Be more aggressive in MPSS demotion of 64K pages to 4K pages and steal more MPSS reserved pages per LRUD invocation.
Temporary fix
Comments
APAR Information
APAR number
IV03174
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2011-07-11
Closed date
2011-07-11
Last modified date
2013-04-16
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
AIX 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U838167
UP11/10/20 I 1000
PTF to Fileset Mapping
U838167 bos.mp64 6.1.7.0
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Document Information
Modified date:
16 April 2013