From owner-cvs-all Sun Oct 10 9:21: 1 1999 Delivered-To: cvs-all@freebsd.org Received: from overcee.netplex.com.au (overcee.netplex.com.au [202.12.86.7]) by hub.freebsd.org (Postfix) with ESMTP id 6E32014BC3; Sun, 10 Oct 1999 09:19:57 -0700 (PDT) (envelope-from peter@netplex.com.au) Received: from netplex.com.au (localhost [127.0.0.1]) by overcee.netplex.com.au (Postfix) with ESMTP id 453321CC6; Mon, 11 Oct 1999 00:19:56 +0800 (WST) (envelope-from peter@netplex.com.au) X-Mailer: exmh version 2.0.2 2/24/98 To: Poul-Henning Kamp Cc: "Daniel C. Sobral" , cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/vm vm_swap.c In-reply-to: Your message of "Sun, 10 Oct 1999 18:10:05 +0200." <15397.939571805@critter.freebsd.dk> Date: Mon, 11 Oct 1999 00:19:56 +0800 From: Peter Wemm Message-Id: <19991010161956.453321CC6@overcee.netplex.com.au> Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk Poul-Henning Kamp wrote: > In message <19991010160654.642ED1CC6@overcee.netplex.com.au>, Peter Wemm writ es > : > >"Daniel C. Sobral" wrote: > >> Poul-Henning Kamp wrote: > >> > > >> > Unless somebody else beats me to it or explains why we need to > >> > keep it, /dev/drum is now scheduled for demolition. > >> > >> /me trembles at the sight of vikings and their bloody axes as the > >> year come to an end... > > > >The only thing of the "swap device" that's actually used is the strategy > >routine which does interleaving for the higher layers. It's really not > >useable as anything else as this strategy routine doesn't actually work for > >normal device access. libkvm doesn't use it, at least not for a very long > >time. IMHO, the strategy routine should be moved elsewhere for the VM swap > >code to use as a subroutine and the whole "device" should be deep-six'ed. > > But isn't this really just a "striping" function which could be done > equally well by ccd or vinum ? Not really. swapping onto a vinum, ccd, etc adds all sorts of new low-memory conditions that we can do without. Cheers, -Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message