Date: Tue, 13 Jul 1999 17:12:08 -0700 (PWT) From: Matthew Jacob <mjacob@feral.com> To: Jason Thorpe <thorpej@nas.nasa.gov>, dillon@freebsd.org Cc: freebsd-hackers@freebsd.org, tech-userlevel@netbsd.org Subject: Re: Swap overcommit (was Re: Replacement for grep(1) (part 2)) Message-ID: <Pine.LNX.4.04.9907131707241.7325-100000@feral.com> In-Reply-To: <199907140004.RAA25629@lestat.nas.nasa.gov>
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> On Tue, 13 Jul 1999 16:56:26 -0700 (PDT) > Matthew Dillon <dillon@apollo.backplane.com> wrote: > > > You have to consider the probability of an event occuring, not just > > the possibility that the event might occur. If the probability is > > one in a million years, then it is not something you need to worry > > about relative to other things that, perhaps, you *should* be worrying > > about. > > Having been a systems programmer and systems administrator at a > university computer science department, dealing with large (well, > they were large back then :-) systems where 60 students log in That's not very large and wasn't back then either, even for low budget hardware. We ran 33 users on a 128KB PDP 11/45 when I worked at Sidereal in Portland (and people who attempted to use vi were taken out behind the woodshed and dealt with). > simultaneously to do their "Data Structures in C++" homework, I > can guarantee you that the probability that someone else's buggy > program will kill your unrelated application is a lot more than > "once in a million years". The purpose of a multiprogramming OS is to keep this from happening. If it happens, you've incorrectly configured the OS or the OS needs some rethinking. As a general rule. This discussion has begun to really be unproductive. But it was interesting to see that it occurred at all. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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