Re: Reducing Systempools

[Vern Hamberg <vhamberg@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Oliver, generally speaking, don't put everything into *BASE. What kinds of 
jobs are running in each pool? You can see this in WRKACTJOB SEQ(*POOL) and 
press F11 to see where things reside.

Basic stuff -

1. Keep similar work in a pool, separate from stuff that works differently. 
Jobs that read the same data in a sequential manner could well be separated 
from jobs that read by key.

2. Change to shared pools and turn on Expert Cache (paging option = *CALC). 
Longer-running sequential data access can scream this way. But not if mixed 
with random, keyed access over the same period. BTW, you CAN change private 
pools to *CALC using the change pool tuning API.

3. Just as multiple subsystems can have jobs in *BASE, multiple subsystems 
can run in one shared pool. Depends on your routing entries and your 
subsystem pool definitions.

There's usually a reason for this kind of division - try to find out why it 
was done.

Besides, if it's not broke, don't try to fix it.    ;-)

HTH

Vern

At 04:48 PM 1/30/2003 +0100, you wrote:
> Hello,
>
> I'm currently looking at reducing our memory pools. We currently have the
> following wrksyssts:
>
>                                                              30.01.03
> 16:51:08
>  % CPU used . . . . . . . :       34,9    System ASP . . . . . . . :
> 193,0 G
>  % DB capability  . . . . :       18,6    % system ASP used  . . . :
> 81,7213
>  Elapsed time . . . . . . :   00:04:07    Total aux stg  . . . . . :
> 210,5 G
>  Jobs in system . . . . . :      12673    Current unprotect used . :
> 4507 M
>  % perm addresses . . . . :      0,024    Maximum unprotect  . . . :
> 5890 M
>  % temp addresses . . . . :      0,735
>  Sys      Pool   Reserved    Max
> Paging
>  Pool    Size M   Size M     Act  Pool        Subsystem   Library
> Option
>    1     598,97    193,16  +++++  *MACHINE
> *FIXED
>    2    1345,82      0,33    137  *BASE
> *FIXED
>    3     250,00      0,00     15  *SPOOL
> *FIXED
>    4      25,92      0,00      1   2          MSGCTL      CV00C00
> *FIXED
>    5     330,40      0,00     20   2          AUFTRAG     CV00C00
> *FIXED
>    6     120,86      0,00     10   2          IT          CV00C00
> *FIXED
>    7      50,00      0,00      5   2          GCINTER     CV00C00
> *FIXED
>    8     330,00      0,00     20   2          AUFTRAGWJ   CV00C00
> *FIXED
>   10      20,00      0,00     10   2          RPSBSW130   SYLASW130
> *FIXED
>
> Bottom
>
> Can I just shift everything to *BASE or will this get me problems? We have
> heavy batch-processing, should I put
> these into a different pool? Or generally seperate batch from interactive?
>
> Currently, we have no performance problems, but I want to cleanup.
>
> Thanks,
>
> OLiver