Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!uunet!cbmvax!grr
From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.unix.ultrix
Subject: Re: Help with process limitation under Ultrix
Message-ID: <8545@cbmvax.UUCP>
Date: 14 Nov 89 02:08:55 GMT
References: <120@cutmcvax.OZ>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 22

In article <120@cutmcvax.OZ> craig@cutmcvax.oz (Craig Farrell) writes:
> 
> 	We are about to  convert our vax over to Ultrix (V3.1) and we require
> a way to limit the number of processes a user can fork off. Ideally we
> would like to do  a minimum of Kernel hacking, so... does someone out there
> have, or know of, a system to limit a users processes for ultrix which we can
> get our hands on. 

There is a configuration parameter that does this "maxuprc" - the only thing
is you don't want to set it too low, since it applies to all non-root user
id's and things get messed up in fairly disgusting ways when id's like daemon,
news, and uucp run out of processes, so I wouldn't recommend setting it lower
than 15 and considerably higher if your system is heavily loaded.

A clever person could probably patch things to change the test for whether
the limit applies from uid=0 to uid < n or gid < n, but I've never bothered,
since I run with maxuprc set to 48, and go track down and shoot offenders...

-- 
George Robbins - now working for,	uucp: {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)