David,

1) AFAIK, NMSTACK is just a LIMIT granted to the Native Mode stack space a
given process may use. It's not an actual memory allocation. Therefore it
wastes no memory space.

2) Message Files (a.k.a. IPC files) have been converted to NM as of 5.0.

HTH ...

Christian Lheureux
Consultant for Systems and Facilities management
APPIC R.H.
France


-----Message d'origine-----
De:     David Rutherford [SMTP:[log in to unmask]]
Date:   mercredi 24 mars 1999 12:18
A:      [log in to unmask]
Objet:  NMSTACK and MESSAGE FILES...

Two questions,


1)      NMSTACK:        If I run a program with an NMSTACK size specified
on
the RUN command, and the NMSTACK size I specify is vastly overstated, could
this have any detrimental effect on system performance.

The situation is that we have 8 programs running in batch all day long
specifying a NMSTACK=2800000. Only one of these programs actually requires
this size of STACK, the others work quite well without it. However, 'peo
ple'
are reluctant to change anything. If I can prove that we are wasting
resources for these other 7 programs, it may be easier to justify changing
it.

2)      Message files:  I seem to remember that when MPE/XL first appeared,
the coding for message files remained in CM. Has this code now been
converted to NM?

Thanks in advance.

Regards,

David
(+44 171 658 5452)


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