Why separate pools?

[rob@xxxxxxxxx]

Since many people are setting QPFRADJ at 2 or 3 I think this begs the 
question:  "Why use separate memory pools?"  QPFRADJ is supposed to 
balance memory between pools.  However IBM puts some limits on it to make 
sure that not everything swings one way or the other too radically.  This 
causes a problem when you do have a major job shift and you do want a more 
radical shift.  If I am using QPFRADJ in this manner that why not just put 
everything into one or two pools?  I could still have numerous subsystems, 
(if that buys me anything), but why not run them all through the same 
pool(s)?

For example, if I start up my eleven Domino partitions on the machine, 
each with a recommendation of 500mb, you know how long it takes for 
QPFRADJ to finally balance out???  But if I were running them in the same 
pool as QBATCH, QINTER, etc the memory would be available instantly. 
Processor doesn't seem to be a constraint on our machines.
% CPU used . . . . . . . :       15.4
Sys      Pool   Reserved    Max  ----DB-----  --Non-DB---  Act- 
Pool    Size M   Size M     Act  Fault Pages  Fault Pages  Wait 
  1    1541.48    476.43  +++++     .0    .0    3.1   3.1   75.5
  2    4654.24     44.66   1156     .6    .6   19.2  60.7   6859
  3    6019.41       .19    458     .0    .0   13.8  25.8  170.0
  4    5903.89       .02     80     .0    .0     .0    .0     .0
  5     183.01       .03     46     .0    .0     .0    .0   75.5
Memory does.
Seems a shame to have a big chunk tied up somewhere when other processes 
could be using it.


Rob Berendt
-- 
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com