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Subject: Re: Swap overcommit (was Re: Replacement for grep(1) (part 2))
To: dillon@apollo.backplane.com (Matthew Dillon)
Date: Fri, 16 Jul 1999 12:27:39 +0100 (BST)
From: "Patrick Welche" <prlw1@newn.cam.ac.uk>
Cc: thorpej@nas.nasa.gov, jobaldwi@vt.edu, tech-userlevel@netbsd.org,
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In-Reply-To: <199907142218.PAA96575@apollo.backplane.com> from "Matthew Dillon" at Jul 14, 99 03:18:50 pm
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Matthew Dillon wrote:
> 
> :On Tue, 13 Jul 1999 23:18:58 -0400 (EDT) 
> : John Baldwin <jobaldwi@vt.edu> wrote:
> :
> : > What does that have to do with overcommit?  I student administrate a undergrad
> : > CS lab at a university, and when student's programs misbehaved, they generate a
> : > fault and are killed.  The only machines that reboot on us without be
> : > explicitly told to are the NT ones, and yes we run FreeBSD.
> :
> :What does it have to do with overcommit?  Everthing in the world!
> :
> :If you have a lot of users, all of which have buggy programs which eat
> :a lot of memory, per-user swap quotas don't necessarily save your butt.
> 
>     If every single one of your users is trying to crash your machine daily,
>     maybe you should consider throwing them off the system and finding users
>     that are less hostile.
> 
>     This conversation is getting silly.  Do you actually believe that
>     an operating system can magically protect itself 100% from armloads of 
>     hostile users?
> 
>     Give me a break.  You people are crazy.  If you have something worthwhile
>     to say i'll listen, but these "the sky is falling!" arguments are idiotic.
> 
> 						-Matt
> 

students != hostile users

Making mistakes is part of learning.

Patrick


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