Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pasteur!ucbvax!hplabs!hpda!hpcupt1!ckw
From: ckw@hpcupt1.HP.COM (Chick Webb)
Newsgroups: comp.sys.hp
Subject: Re: Question about max. # of processes on HP 9000.
Message-ID: <7410010@hpcupt1.HP.COM>
Date: 7 Apr 88 17:04:05 GMT
References: <12025@sri-spam.istc.sri.com>
Organization: Hewlett Packard, Cupertino
Lines: 45


   > I've been doing some software IPC experimentation on an HP 9000 which
   > requires that I be able to start up about 1 Server process and about
   > 30 Client processes.  Currently I seem to only be able to start up about
   > 22 Client processes before getting an error message from the system
   > saying "no more processes".  Has anyone encountered this problem, and
   > if so did you find some way of raising the limit?  I've been running as
   > a simple user; I assume that root can make as many processes as it wants?

You don't mention what kind of 9000 you're running, so I'll try to address
all three boxes.

S500
----
On this machine there is a parameter, max_proc_per_user, which defines
the maximum number of processes any single user can have running.  It
can be changed using the uconfig(1m) command.

S800
----
There's a kernel parameter, nproc, that specifies the number of
processes (regardless of owner) that may concurrently exist.  The
defuault is set to 20+(8*MAXUSERS), and is specified in the kernel
configuration file (usually /etc/conf/gen/S800).  Changing this
parameter involves modifying the configuration file, and regenerating
the kernel.  (Alternatively, you can use adb, but this is more
difficult.)

S300
----
The S300 also defines nproc as the number of processes that may
concurrently exist.  It is defined in /etc/conf/dfile (usually).  In
this case as well, the kernel needs to be re-built with the modified
value.

>Robert Allen, robert@spam.istc.sri.com		"Pay back time!"
>415-859-2143 (work phone, days)

------
Hope this helps!

Chick Webb                          "I am sitting in the smallest room of
Hewlett-Packard Company              the house.  I have your letter in front
Cupertino, CA                        of me.  It will soon be behind me."
UUCP: {ucbvax, etc.}!hpda!ckw
ARPA: ckw@hpda.HP.COM                - A letter of relpy, by Voltaire