The MPE/iX 7.0 Exp 1 Communicator article on the BIGPIN enhancement has a
chart on page 89 that shows the maximum pin for 256 Mb of memory is 1000.
Subtracting the system processes, I would think that a limit of around 910
children would be expected.  How many pins are in use in total??  SHOWVAR
HPMAXPIN to see the limit.

James (Testing with 7.01 also) Overman

"Christian Lheureux" <[log in to unmask]> wrote in message
news:<[log in to unmask]>...
> Hi all,
> 
> While writing a test suite to test the proposed bigpin feature on C.70.01,
I
> hit a strange problem...
> 
> When creating a large numbre of child (children ?) processes from the same
> parent, I hit a createstatus = 4 at child#910. I suspected I had hit some
> limit like "nnn" children per parent, but it's not the case. When breaking
> my test suite into slammer pieces, like 10 times 100 children, same
results.
> When launching 909 children then running (in another Reflection window)
> another program, say discfree, same results. When trying to launch another
> session same thing. The exact error message is 'out of system resources'.
> 
> The child process just calls pause. It does not open any files. It gobbles
> up very very little stack, heap and transient space. I also checked for a
> possible disk space exhaustion/fragmentation problem, but it's not the
case
> either. After launching the 909 children, I still have about 1.7 million
> sectors avail to trans on the system domain, including a few blocks of
> 100,000 or more sectors.
> 
> I tried to run the parent with :debug enabled. From the stack trace, it
> looks like it is trying to expand a ports descriptor system table but
fails
> with an error of -40 from subsys 107, or invalid size specified from VSM.
> 
> This is not related to the bigpin feature, which is not yet installed on
my
> system. The MPE/iX version is C.70.01 P5 (Source : HPSWINFO), MPE/iX
C.39.06
> (source : showme). The system is a 978 with 256 Mbytes and 2 2-gig
internal
> disks.
> 
> I am trying to run the same test suite on a C.65.02 box, but I don't have
> enough transient space, and the program aborts with 'out of disk space' at
> about 120 children. I will also cross-check sysgen configs for possible
> discrepancies in the few configurable system parameters.
> 
> A search of ITRC yielded no results (that's usual), and a search of
HP3000-L
> archives yielded no results either (that's more unusual).
> 
> Anyone else got similar problems ? Any help and suggestions available ?
> 
> TIA,
> 
> Christian Lheureux
> Responsable du Département Systèmes et Réseaux / Head of Systems and
> Networks Department
> APPIC R.H.
> business partner hp invent
> Tel : +33-1-69-80-97-22   /   Fax : +33-1-69-80-97-14 / e-mail :
> [log in to unmask]
> "Le Groupe APPIC recrute, contactez nous !"
> 
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