Date: Sun, 18 Jul 1999 12:25:24 +0900 From: "Daniel C. Sobral" <dcs@newsguy.com> To: Dag-Erling Smorgrav <des@flood.ping.uio.no> Cc: Assem Salama <salama@twcny.rr.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: Devloper Message-ID: <37914924.4B6FCB28@newsguy.com> References: <37907E69.90037620@twcny.rr.com> <xzpg12nnri3.fsf@flood.ping.uio.no> <3790BBAF.3556105C@newsguy.com> <xzpemi7npos.fsf@flood.ping.uio.no>
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Dag-Erling Smorgrav wrote: > > "Daniel C. Sobral" <dcs@newsguy.com> writes: > > * a sysctl to make the system non-overcommit > > So I see common sense lost in the end. I think nobody objects to the knob, just to people trying to convince us that it would do any good. > > * SIGDANGER in low-memory situations > > Do we support more than 32 signals? So it's a cascade project. :-) > ISTR AIX already does this. What signal numbers / names does AIX use > for this? It's AIX that I have in mind when I think of this. (AIX does have the knob, which can be set per process.) > > * Dividing processes into those that ought to be killed first and > > those that ought to be killed last in low-memory situations > > How does AIX solve that problem? AFAIK, it doesn't. Though maybe the processes which are not overcommitting are "immune", which makes some sense. > > * Per-user swap space limit > > Is that a realistic goal? What do we do about shared text, count it > once for every user that uses it? Shared TEXT is not swapped. :-) We are talking about *swap*. I don't think we could have any swap space shared between users except through some arcane uses of mmap(). Anyway, DG suggested, Dillon thought it a good idea, who am I to say anything? -- Daniel C. Sobral (8-DCS) dcs@newsguy.com dcs@freebsd.org "Misguided Angel hanging over me Heart like Gabriel, pure and white as ivory Soul like Lucifer, black and cold like a piece of lead..." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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