From owner-freebsd-hackers Tue Apr 28 05:40:05 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id FAA10139 for freebsd-hackers-outgoing; Tue, 28 Apr 1998 05:40:05 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from Kitten.mcs.com (Kitten.mcs.com [192.160.127.90]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id FAA09980; Tue, 28 Apr 1998 05:39:57 -0700 (PDT) (envelope-from karl@Mars.mcs.net) Received: from Mars.mcs.net (karl@Mars.mcs.net [192.160.127.85]) by Kitten.mcs.com (8.8.7/8.8.2) with ESMTP id HAA11976; Tue, 28 Apr 1998 07:38:41 -0500 (CDT) Received: (from karl@localhost) by Mars.mcs.net (8.8.7/8.8.2) id HAA26656; Tue, 28 Apr 1998 07:38:41 -0500 (CDT) Message-ID: <19980428073841.05698@mcs.net> Date: Tue, 28 Apr 1998 07:38:41 -0500 From: Karl Denninger To: dyson@FreeBSD.ORG Cc: Robert Withrow , freebsd-hackers@FreeBSD.ORG Subject: Re: SIGDANGER References: <199804280030.UAA06099@spooky.rwwa.com> <199804280453.XAA03316@dyson.iquest.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.84 In-Reply-To: <199804280453.XAA03316@dyson.iquest.net>; from John S. Dyson on Mon, Apr 27, 1998 at 11:53:35PM -0500 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, Apr 27, 1998 at 11:53:35PM -0500, John S. Dyson wrote: > Robert Withrow said: > > > > dyson@freebsd.org said: > > :- We do need to adopt an extended signal set, and I think that someone > > :- else has already developed it. SIGDANGER could be valuable. > > > > I've always considered this to be one of the most brain dead > > mis features of AIX, since it invariably picks the process you > > least want have killed, like the compiler that doing part > > of your three-hour integration build. Or your emacs. Please > > don't add this to freebsd. > > > When virtual memory gets low, FreeBSD will kill processes anyway :-(. > > -- > John | Never try to teach a pig to sing, > dyson@freebsd.org | it just makes you look stupid, > jdyson@nc.com | and it irritates the pig. Well, now wait a minute.. SIGDANGER is useful if properly trapped and handled. I'd like to see if supported with the default to be "ignore" (ie: you have to ASK for it to be delivered and processed). I've used this feature on AIX to avoid kernel deadload/death conditions in mission-critical processes. Yes, I agree that AIX is somewhat f*fd in the way it handles it, but the feature itself is quite nice. -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message