Thanks, Edward.
Using the IPCS to view the Virtual Storage Map, and misc tips.
I have adjusted the CSA parameter in the IEASYSxx, to give some storage
relief in the below 16M private area.
Regards Lim ML
On 14-May-12 8:10 AM, Edward Jaffe wrote:
On 5/13/2012 8:24 AM, Lim Ming Liang wrote:
I need some lesson on reducing Common Area below the 16M line.
Anyone can give me some 101 on increasing the private area size below
16M line ?
Or any guides or manual will help me to embark on this ?
First you need to determine the actual size of your private area and
common areas below the line.
Look at any SVC dump on your system using IPCS. Selection Option 2.6I.
From that list select 'VSMINFO'. You will see a virtual storage map
similar to the one I've pasted below from one of my systems.
To increase the private area, you need to move MAX USER REGION ADDR up
by one 1 MB.
As you can see, my MAX USER REGION ADDR (and CSA BOTTOM) is x'B00000'
and PLPA BOTTOM is x'D2D000'. The size of my CSA is therefore
x'22D000' or 2228K. My CSA= specification is IEASYSxx is
CSA=(1536,81920) so I was given an additional 698K of CSA due to
rounding.
So, if I were to increase my private area 1 MB (1024K) by donating
CSA, I would need to reduce my CSA specification to CSA=(1204,81920).
You can also donate from anything below R/W NUC BOTTOM such as SQA,
PLPA, FLPA and MLPA.
CVT: 00FDCF48 GDA: 022DF3B0 LDA: 7FF19E10
PRIVATE STORAGE DATA SHOWN IS FOR DEFAULT ASID: X'44'
STORAGE MAP
___________________________ 80000000 <- TOP OF STORAGE
| : EXT LSQA/SWA/229/230 | 80000000 <- MAX EXT USER REGION ADDR
|E:_________________________| 7F070000 <- ELSQA BOTTOM
|P: (FREE EXTENDED STORAGE) |
|V:_________________________| 13B24000 <- EXT. USER REGION TOP
|T: EXTENDED USER REGION |
|===========================| 0C400000 <- EPVT BOTTOM
| EXTENDED CSA (ECSA) | -- NO ECSA TO ESQA CONVERSION --
|___________________________| 073F5000 <- ECSA BOTTOM
| : EXTENDED MLPA (EMLPA) |
|E:_________________________| 073E7000 <- EMLPA BOTTOM
|L: EXTENDED FLPA (EFLPA) |
|P:_________________________| 073E4000 <- EFLPA BOTTOM
|A: EXTENDED PLPA (EPLPA) |
|___________________________| 03B44000 <- EPLPA BOTTOM
| EXTENDED SQA (ESQA) |
|___________________________| 01ADF000 <- ESQA BEGINS
| :_________________________| 01ADEFFF <- EXT. R/W NUC TOP
|E: |
|N: EXT R/W NUCLEUS |
|U:_________________________| 01A7F000 <- EXT. R/W NUC BOTTOM
|C: |
| :_________________________| 01A7E9FF <- R/O NUC TOP
============================= 00FFFFFF <- 16M LINE
| : R/O NUCLEUS |
|N:_________________________| 00FE3000 <- R/O NUC BOTTOM
|U: |
|C:_________________________| 00FE2D07 <- R/W NUC TOP
| : R/W NUCLEUS |
|___________________________| 00FD4000 <- R/W NUC BOTTOM
| SQA |
|___________________________| 00F07000 <- SQA BOTTOM
| : PLPA |
|L:_________________________| 00D2D000 <- PLPA BOTTOM
|P: FLPA |
|A:_________________________| -- NO FLPA DEFINED AT IPL --
| : MLPA |
|___________________________| -- NO MLPA DEFINED AT IPL --
| CSA | -- NO CSA TO SQA CONVERSION --
|===========================| 00B00000 <- CSA BOTTOM
| : LSQA/SWA/229/230 | 00B00000 <- MAX USER REGION ADDR
|P:_________________________| 00A9E000 <- LSQA BOTTOM
|V: (FREE STORAGE) |
|T:_________________________| 0057B000 <- USER REGION TOP
| : USER REGION |
|___________________________| 00006000 <- USER REGION BOTTOM
: SYSTEM STORAGE :
:___________________________: 00000000
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