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Eric Thomas <[log in to unmask]>
Wed, 19 Feb 1992 13:28:41 +0100
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On Tue, 18  Feb 1992 17:19:00 CST "Juan  M. Courcoul" <COURCOUL@VMTECQRO>
said:
 
>Pity. The only reason I have LMON is for its spool utilization checking.
 
You are making a mistake. Get yourself an accurate spool checker from the
VM-UTIL filelist or a workshop tape or  whatever. The one used by LMON is
inaccurate, giving a  gross overestimate of the amount of  spool space in
use (it  reads the counters  maintained by  CP, which are  totally broken
under non-XA systems).  Determining the exact spool  utilization under SP
and HPO  involves scanning  control blocks whose  format varies  with the
release, flavour (SP  vs HPO), type of disk (CKD  vs FBA) and, sometimes,
service level. The program usually goes into a loop if the control blocks
are not  the way it thinks  they are, so  I refused to use  anything that
sophisticated in LMON. The  result is that it can be off  by 50% or more,
and complain that the spool is 95% full when you have just purged half of
the files.  IBM fixed this  problem in XA: I  still read the  CP counters
(using  a different  and incompatible  method),  but this  time they  are
accurate. By the way, SEARN runs VM/SP 5.
 
  Eric

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