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From: root@ICAEN.UIOWA.EDU (Super user)
Newsgroups: comp.sys.apollo
Subject: Re: create remote process & NCS sockets
Message-ID: <9008110141.AA01058@icaen.uiowa.edu>
Date: 11 Aug 90 01:30:33 GMT
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Organization: Iowa Computer Aided Engineering Network, University of Iowa
Lines: 44

In article <1174@fang.dsto.oz> agq@dstos3.dsto.oz (Ashleigh Quick) writes:
>
>
[ description of problems with crp under sr10.1 deleted ]

>Msg> Questions:
>Msg>
>Msg> Is there a limit in DOMAIN/OS on the number of print servers that can
>Msg> be run on a node? (And if so, WHY????)

Yes, there is a limit that is set by the number of NCS sockets that you
can have open. This limit is OS revision dependent. (See next question)

>Msg> Is there a limit on the number of 'sockets' available for NCS type
>Msg> services? (Again - if so why?) If there is a limit - can it be
>Msg> configured in any way??????

Yes there is a OS revision dependent limit on the number of sockets available
for NCS. Back in the "good old days" (pre-NCS) there was no way that a user
could directly consume DDS sockets, they could only run a selected set of
Apollo supplied tools (such as mbx_helper, netman, spm, etc) that used them
for the user. With the advent of NCS, users could write server programs that
directly consumed DDS sockets. Thus there arose more contention for this scarce
resource & things became tight. At sr10.2 the number of sockets was increased,
as noted in the sr10.2 release notes:

                             Software Release 10.2

     1.5.10  Enhancement to Domain/OS Sockets

     The number of user Domain/OS sockets available has been increased at
     SR10.2 from 23 to 64 (for m68k systems).  We now provide sufficient
     user Domain/OS sockets for each user process. This is important as NCS
     applications are becoming more prevalent.

So the answer to your problem is to up-rev your OS ASAP. At sr10.2 it is possible
to run 3 print servers on one node with out problems. 

FYI: At sr10.2 there have been several improvements that make the prsvr printing
system work better. I started writing a print server driver under sr10.1 but gave it up
as I was losing too much hair. Now under sr10.2 I have a reasonable port of my sr9.7
HP LaserJet printer driver working.

Dave Funk