Hi,
APAR PK71583 is now closed with a PTF and we have tested this with good results
in a number of IMS subsystems running Version 10.
IMS Version 10 even with this APAR and without running Fast Path is using more
common storage than Version 9 for each IMS subsystems.
-56K CSA used when compared to baseline V9
+487K ECSA used when compared to baseline V9
+431K ECSA net increase still with fixtest PK71583 compared to +965K ECSA net
increase without the fixtest for PK71583 this considers the storage that moved
from below to above
The VSCR impact of IMS Version 10 was a negative which was unexpected.
It eroded some of the common storage savings we made recently with z/OS 1.9.
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 ...... PK71583 Last Changed ........ 08/10/14
CSA STORAGE IS BEING USED FOR FAST PATH BLOCKS, EVEN AFTER A
COLD START WITH FP=N SPECIFIED. FAST PATH IS NOT BEING USED.
Symptom ...... IN INCORROUT Status ........... CLOSED PER
Severity ................... 2 Date Closed ......... 08/10/08
Component .......... 5635A0100 Duplicate of ........
Reported Release ......... 010 Fixed Release ............ 999
Component Name IMS V10 Special Notice HIPER
Current Target Date ..09/01/14 Flags RESTART/BOOT/IPL
SCP ...................
Platform ............
Status Detail: SHIPMENT - Packaged solution is available for
shipment.
PE PTF List:
PTF List:
Release 010 : UK40560 available 08/10/14 (1000 )
Parent APAR:
Child APAR list:
ERROR DESCRIPTION:
With IMS releases prior to IMS V10, when Fast Path support was
not included in the SYSGEN, DBFSCD0x would not be included in
module DFSBLK0x. In this case, Fast Path fields in the IMS SCD,
such as SCDESCDQ, would contain zero for a non-Fast Path system
and DFSPLPP0 (CTL, MODULE PRELOAD, PROCLIB PROCESSOR) would not
load Fast Path modules from DBFIIN30.
.
Starting with IMS V10, DBFSCD0X is always included in module
DFSBLK0X. Even with the parameter specification of FP=N and
a COLD Start of IMS, SCD field SCDESCDQ will not contain zero
so DFSPLPP0 will process the module load list contained in
DBFIIN30. This will load Fast Path modules for a system which
does not use Fast Path.
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