CSA

Type

OMEGAMON Minor command

Description

Displays common storage area (CSA) by subpool and protect key. (There are other entries with the same name. See the previous entry for a description of CSA as a minor of address space majors.)

CSA displays the number of bytes used as well as allocated for those subpools that are not in fetch-protected memory.

Protected subpools display *AUTH* in the Storage Used column. OMEGAMON cannot access these protected subpools.

The display of CSA utilization shows the extents, allocated blocks, storage used, and the largest free block.

 SYS   >> IPS=83,OPT=83,ICS=83,  SYSRES=(MVS123,145) <<
 CSA  Subpl-Key  Ext     Alloc. Blks         Storage Used    Largest Free Blk
+       227-6      4             16K             *AUTH*              *AUTH*
+       231-6     13            272K           267K+384              3K+832
+       241-6      9             48K            47K+784                 240
+       228-1      1              4K                56               3K+968
+       231-1      2             20K            16K+680              3K
+       241-1      8             32K            30K+96               1K+16
+       241-0      3             12K            11K+96                  326
+       227-0      3             20K             *AUTH*              *AUTH*
+       231-0     16             76K            65K+1016             5K+56
+                ---  --------------  -------------------  ------------------
+     Total:      59            500K           439K+40              17K+390
+     Percent of CSA:          16.6%          14.6%                0.6%
+     CSA Size                 3012K
display 

Subpl-Key

Storage by subpool and key. These are the typical protect key assignments:

0

Control Program

1

Job Scheduler and JES

2,3,4

Reserved

5

Data Management: IOS, OPEN/CLOSE/EOV

6

TCAM and VTAM®

7

IMS & DB2®

8

All V=V programs

9

Public Storage Key

10-15

V=R programs

For more information on subpool assignments, see the appropriate IBM® manual.

Ext

Number of extents.

Alloc. Blks

Storage that the VSM assigned to the subpool.

Storage Used

Part of the subpool allocation that has been used to satisfy a GETMAIN request.

Largest Free Blk

Largest piece of storage that is in a subpool allocation, but has not been used to satisfy a GETMAIN request.

Total

Ext, Alloc. Blks, and Storage Used totals are sums of the subpools displayed. Largest Free Blk is the largest free block of all subpools or of unallocated storage.

When an SQA overflow condition occurs, the following line appears at the bottom of CSA output:

(CSA SIZE DOES NOT INCLUDE nnnk OF CSA CONVERTED TO SQA)

To display CSA for real storage, use the CSAR minor command of SYS.

Related Information

Minor of: SYS

Other system storage minor commands: CSAR, ECSA, ESQA, RMAP, SQA, and VMAP