Hi,
This was an issue several of you helped with back in March by confirming
that the issues with the BPX1DD service were reproducible at different
sites we quickly moved past looking at our site to IBM doing a recreate
in the lab and taking an APAR.
OA24361 is now closed with PTFs available.
It addresses this problem and a separate problem we reported to the RMF
team when using VSTOR DETAIL against an asid that had many getmained
areas in shared subpools with many TCBs. This provides dramatic CPU
utilization relief in these cases.
Kudo's to the RMF team for the later code change!
Best Regards,
Sam Knutson, GEICO
System z Performance and Availability Management
mailto:[EMAIL PROTECTED]
(office) 301.986.3574
"Think big, act bold, start simple, grow fast..."
APAR Identifier ...... OA24361 Last Changed ........ 08/05/17
VARIOUS RMF PROBLEMS
Symptom ...... MS MSGERB307I Status ........... CLOSED PER
Severity ................... 3 Date Closed ......... 08/05/14
Component .......... 566527404 Duplicate of ........
Reported Release ......... 730 Fixed Release ............ 999
Component Name RMF Special Notice
Current Target Date ..08/05/19 Flags
SCP ...................
Platform ............
Status Detail: SHIPMENT - Packaged solution is available for
shipment.
PE PTF List:
PTF List:
Release 720 : UA41046 available 08/05/17 (1000 )
Release 730 : UA41047 available 08/05/17 (1000 )
Release 740 : UA41048 available 08/05/17 (1000 )
Parent APAR:
Child APAR list:
ERROR DESCRIPTION:
1.)RMF Monitor III:
During Daylight Savings Time change the following message may
be issued by RMFGAT:
RMFGAT ERB307I III: MONITOR III DATA GATHERER ERB3GINI.
INTERFACE BPX1SDD FAILED. RETURN CODE: 0000 REASON CODE: 0000
.
ERB3GINI issues USS service BPX1SDD to dub the RMFGAT as a
permanent process. It is possible for this service to give a
return value of 0 or 1 when the process completes
successfully.
ERB3GINI is treating any non-zero return value as an error
and is issuing ERB307I.
2.)RMF Monitor I:
Excessive CPU usage by RMF address space when VSTOR gatherer
option is used to collect private are details for an address
space.
The problem occurs when the address space, specified by the
VSTOR option, has many tasks that are sharing the same
private storage subpool.
LOCAL FIX:
1.)None, this message can be ignored as informational if the
return and reason code are both 0000.
2.)None.
PROBLEM SUMMARY:
****************************************************************
* USERS AFFECTED: RMF users *
****************************************************************
* PROBLEM DESCRIPTION: 1. RMF Monitor III:Message ERB307I *
* after Daylight Savings Time change *
* *
* 2. RMF Monitor I:Excessive CPU *
* time, usage by RMF address space when *
* Monitor I VSTOR option is active to *
* collect private storage data *
****************************************************************
* RECOMMENDATION: 1. None, please install this apar. *
* 2. None, please install this apar. *
****************************************************************
1. RMF Monitor III:
When RMF Monitor III performs an internal restart as result
of a Daylight Saving Time change, USS service BPX1SDD in
module ERB3GINI successfully completes with a return value
of 1. Since ERB3GINI treats any non-zero return values as an
error, misleading message ERB307I with BPX1SDD interface
failure is issued.
Affected RMF releases: z/OS-1.7 up to z/OS-1.9
2. RMF Monitor I:
RMF Monitor I uses VSMLIST service to collect private
storage data of address spaces specified by the VSTOR
gatherer option.
Since VSTOR data gatherer ERBMFPVS does not specify the
PVTSP parameter in the VSMLIST call, the default of
PVTSP=ALL is used.
This causes excessive time in the VSMLIST service for
address spaces, with a large number of tasks that are
sharing private storage subpools.
ERBMFPVS should be changed to use PVTSP=OWNED parameter in
the VSMLIST call to retrieve the address space private
storage.
Affected RMF releases: z/OS-1.7 up to z/OS-1.9
PROBLEM CONCLUSION:
1. RMF Monitor III:
With this APAR, module ERB3GINI is changed to consider
return values 0 and 1 as successful BPX1SDD service calls.
2. RMF Monitor I:
With this APAR, module ERBMFPVS uses PVTSP=OWNED parameter
in the VSMLIST service call to retrieve private storage
subpools (SP=PVT).
TEMPORARY FIX:
COMMENTS:
MODULES/MACROS: ERBMFPVS ERB3GINI
SRLS: NONE
RTN CODES:
CIRCUMVENTION:
MESSAGE TO SUBMITTER:
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