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>From my COMMON pitch on System Values:
Name: QPFRADJ
Description: Performance Adjustment
IBM Initial Value: '2' (Effective with V2 R1.0)
'1' (Prior to V2 R1.0)
Length & Type: Character: 1
Valid Values and their Meanings:
Effective:
'0' No performance adjustment.
'1' Adjust performance pool sizes, activity levels
and system values at IPL.
'2' Adjust performance pool sizes, activity levels V2
R1.0
and system values at IPL and dynamically.
'3' Adjust performance pool sizes, activity levels V2
R2.0
and system values dynamically.
The following adjustments are made to optimize performance:
Comments: Change this system value to '0' if you want to do
your tuning.
IPL adjustments are made based on the available
memory, lines, control units, and devices configured.
Setting this system value at '1' or '2' takes
additional time at IPL.
Dynamic adjustment uses the system job QPFRADJ to
make adjustments. This process uses less than one
half of one percent of CPU resources. If the
diagnosis for any given shared pool is the same after
three periods, the change is made. V5R2 users see
PTF SI07195 for further options. Optionally, you may
journal changes made by this process.
For any system or partition during a hardware or
software upgrade, the value of ‘0’ should be changed
to ‘1’, and the value of ‘3’ should be changed to
‘2’. These values can be changed back after the
first IPL, otherwise it is possible to create a
system with a base pool too small to IPL.
For systems with automated or dynamic LPAR
adjustment, it is recommended that this system value
be set to ‘2’.
This change will become effective immediately.
Migrating to RISC: This system value must be changed to '2' during the
migration from CISC to RISC.
Al
Al Barsa, Jr.
Barsa Consulting Group, LLC
400>390
"i" comes before "p", "x" and "z"
e gads
Our system's had more names than Elizabeth Taylor!
914-251-1234
914-251-9406 fax
http://www.barsaconsulting.com
http://www.taatool.com
http://www.as400connection.com
John_Bresina@alli
anzlife.com
Sent by: To
midrange-l-bounce Midrange Systems Technical
s@xxxxxxxxxxxx Discussion
<midrange-l@xxxxxxxxxxxx>
cc
02/08/2006 02:32
PM Subject
Re: Allocation of memory pools
Please respond to
Midrange Systems
Technical
Discussion
<midrange-l@midra
nge.com>
System value . . . . . : QPFRADJ
Description . . . . . : Performance adjustment
Performance adjustment . . . : 2 0=No adjustment
1=Adjustment at
IPL
2=Adjustment at
IPL and automatic adjustment
3=Automatic
adjustment
John Bresina Jr
Sr Server Engineer - Midrange Team
Allianz Life of North America
5701 Golden Hills Drive
Minneapolis, Mn 55416
763 582 6761
"Douglas W.
Palme"
<dpalme@xxxxxxxxx To
om> "Mid Range List"
Sent by: <midrange-l@xxxxxxxxxxxx>
midrange-l-bounce cc
s@xxxxxxxxxxxx
Subject
Allocation of memory pools
02/08/2006 01:26
PM
Please respond to
Midrange Systems
Technical
Discussion
<midrange-l@midra
nge.com>
If my memory serves me correctly, isn't there a system option that allows
you to set the system to allocate its memory among the various pools
according to its own needs?
I for the life of me, cannot recall what the heck that setting is, if
someone knows it off the top of your head, I would appreciate you passing
it
along, that is if you do not mind sharing such vital information :)
If you bought it, it was hauled by a truck - somewhere, sometime.
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