From owner-cvs-all Sun Nov 28 13:48:49 1999 Delivered-To: cvs-all@freebsd.org Received: from freja.webgiro.com (freja.webgiro.com [212.209.29.10]) by hub.freebsd.org (Postfix) with ESMTP id C3768153E2; Sun, 28 Nov 1999 13:48:41 -0800 (PST) (envelope-from abial@webgiro.com) Received: by freja.webgiro.com (Postfix, from userid 1001) id A0A5C1927; Sun, 28 Nov 1999 22:49:28 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by freja.webgiro.com (Postfix) with ESMTP id 9787E49EC; Sun, 28 Nov 1999 22:49:28 +0100 (CET) Date: Sun, 28 Nov 1999 22:49:28 +0100 (CET) From: Andrzej Bialecki To: Poul-Henning Kamp Cc: cvs-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/conf options src/sys/dev/md md.c src/sys/i386/conf GENERIC LINT PCCARD src/sys/kern vfs_conf.c src/sys/sys conf.h src/sys/ufs/mfs mfs_vfsops.c In-Reply-To: <18152.943825486@critter.freebsd.dk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk On Sun, 28 Nov 1999, Poul-Henning Kamp wrote: > In message , Andrze > j Bialecki writes: > > >Ok, that was one thing. What about its impact on VM resources? I had a > >look at the sources, and the look quite simple compared to MFS. From my > >cursory look it seems, though, that MD will truely reserve all memory tha > >you requested at compile time, and it's not pageable, whereas MFS could > >use it up as needed (except that it wouldn't give it back :-)... > > For MFS_ROOT it works *EXACTLY* the same. Same kind of memory, same > properties etc etc etc. Ok. I need to go to bed... ;-) ...but IIRC, MFS wasted more space than needed because the same pages were kept in memory twice - one copy for the original bloc,the other for cache. Is thi the same here? Andrzej Bialecki // WebGiro AB, Sweden (http://www.webgiro.com) // ------------------------------------------------------------------- // ------ FreeBSD: The Power to Serve. http://www.freebsd.org -------- // --- Small & Embedded FreeBSD: http://www.freebsd.org/~picobsd/ ---- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message