Date: Sat, 15 Mar 2003 09:32:12 +1100 From: Peter Jeremy <jeremyp@c18609.belrs1.nsw.optusnet.com.au> To: Pawel Jakub Dawidek <nick@garage.freebsd.pl> Cc: "Daniel C. Sobral" <dcs@tcoip.com.br>, Mike Silbersack <silby@silby.com>, Garance A Drosihn <drosih@rpi.edu>, Poul-Henning Kamp <phk@phk.freebsd.dk>, Juli Mallett <jmallett@FreeBSD.ORG>, Eivind Eklund <eivind@FreeBSD.ORG>, David Schultz <das@FreeBSD.ORG>, src-committers@FreeBSD.ORG, cvs-src@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/vm ... SIGDANGER Message-ID: <20030314223211.GA3897@cirb503493.alcatel.com.au> In-Reply-To: <20030314204454.GI567@garage.freebsd.pl> References: <8023.1047662161@critter.freebsd.dk> <p05200f2bba97e5a92150@[128.113.24.47]> <20030314140414.V4480@odysseus.silby.com> <3E723A8A.8070100@tcoip.com.br> <20030314204454.GI567@garage.freebsd.pl>
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[This whole thread is getting way off-topic for the cvs lists. It belongs in -arch or -hackers] On Fri, Mar 14, 2003 at 09:44:54PM +0100, Pawel Jakub Dawidek wrote: >Why not choose process to kill by their priority? > >If we got some important processes even without uid=0 we could renice them >to value less than 0. Because the process priority is a hint to the scheduler regarding CPU allocation. It has nothing at all to do with how important a process is. It's fairly common to renice a CPU-bound process to a fairly low priority so it doesn't interfere with interactive response - that doesn't mean the process isn't important. Any solution must be able to handle a big, important, long-running CPU bound process. Your "solution" means that this process would need to be given a negative priority - which would make the whole system unusable for anything else since that process would then hog the CPU (instead of sharing it). Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-src" in the body of the message
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