From owner-freebsd-hackers Wed Aug 5 00:40:05 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id AAA04049 for freebsd-hackers-outgoing; Wed, 5 Aug 1998 00:40:05 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from smtp03.primenet.com (smtp03.primenet.com [206.165.6.133]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id AAA03987 for ; Wed, 5 Aug 1998 00:40:01 -0700 (PDT) (envelope-from tlambert@usr02.primenet.com) Received: (from daemon@localhost) by smtp03.primenet.com (8.8.8/8.8.8) id AAA29576; Wed, 5 Aug 1998 00:39:47 -0700 (MST) Received: from usr02.primenet.com(206.165.6.202) via SMTP by smtp03.primenet.com, id smtpd029571; Wed Aug 5 00:39:43 1998 Received: (from tlambert@localhost) by usr02.primenet.com (8.8.5/8.8.5) id AAA20325; Wed, 5 Aug 1998 00:39:40 -0700 (MST) From: Terry Lambert Message-Id: <199808050739.AAA20325@usr02.primenet.com> Subject: Re: executables over NFS To: dg@root.com Date: Wed, 5 Aug 1998 07:39:40 +0000 (GMT) Cc: tlambert@primenet.com, ben@rosengart.com, hackers@FreeBSD.ORG In-Reply-To: <199808050456.VAA07690@implode.root.com> from "David Greenman" at Aug 4, 98 09:56:00 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 > >They are treated as local files -- that is, first page-in is from > >the vnode, and subsequently aggressively cached, including page-out > >to local swap store in preference to discard, so subsequent page-in > >is from local swap store. > > That is not true. In no case will vnode-backed pages be paged out to > swap. The only case where VM could start out as vnode backed and end > up in swap is after a COW, in which case a swap-backed page is created. > This behavior is not modified by the underlying file system type. I thought it was true for FFS as well; a posting in 1996 by John Dyson led me to believe this was true, and I didn't see a change in policy. 8-(. I'll ask John, but you're probably right... 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