From owner-freebsd-hackers Thu Jan 7 18:52:05 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id SAA17791 for freebsd-hackers-outgoing; Thu, 7 Jan 1999 18:52:05 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from smtp04.primenet.com (smtp04.primenet.com [206.165.6.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA17784 for ; Thu, 7 Jan 1999 18:52:04 -0800 (PST) (envelope-from tlambert@usr01.primenet.com) Received: (from daemon@localhost) by smtp04.primenet.com (8.8.8/8.8.8) id TAA23207; Thu, 7 Jan 1999 19:51:29 -0700 (MST) Received: from usr01.primenet.com(206.165.6.201) via SMTP by smtp04.primenet.com, id smtpd023140; Thu Jan 7 19:51:22 1999 Received: (from tlambert@localhost) by usr01.primenet.com (8.8.5/8.8.5) id TAA03819; Thu, 7 Jan 1999 19:51:21 -0700 (MST) From: Terry Lambert Message-Id: <199901080251.TAA03819@usr01.primenet.com> Subject: Re: questions/problems with vm_fault() in Stable To: dillon@apollo.backplane.com (Matthew Dillon) Date: Fri, 8 Jan 1999 02:51:20 +0000 (GMT) Cc: tlambert@primenet.com, dyson@iquest.net, pfgiffun@bachue.usc.unal.edu.co, freebsd-hackers@FreeBSD.ORG In-Reply-To: <199901080106.RAA36238@apollo.backplane.com> from "Matthew Dillon" at Jan 7, 99 05:06:15 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > :The recovery mechanism you outline deals with breaking pages back > :to the system for reuse, but *aggrivates* the fragmentation issue > :to an almost unholy level, which just gets worse if you try and add > :cylinder groups to "grow" the MFS. > > No it doesn't. Explain to me how it aggravates the fragmentation > issue. Remember, we *don't* *care* how 'fragmented' the file data > is in MFS's device namespace. We just care how fragmented it is on > physical media - the swap backing store. The swapper automatically > defragments anything over a page in size. Kernel VM space fragmentation. Try to load a quiccam driver KLD that need to malloccontig. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message