From owner-freebsd-hackers Sat Feb 24 19:29:58 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from mail.du.gtn.com (mail.du.gtn.com [194.77.9.57]) by hub.freebsd.org (Postfix) with ESMTP id 0CA4C37B401 for ; Sat, 24 Feb 2001 19:29:54 -0800 (PST) (envelope-from ticso@cicely5.cicely.de) Received: from cicely7.cicely.de (cicely.de [194.231.9.142]) by mail.du.gtn.com (8.11.0.Beta3/8.11.0.Beta3) with ESMTP id f1P3TJO08769 (using TLSv1/SSLv3 with cipher EDH-RSA-DES-CBC3-SHA (168 bits) verified NO); Sun, 25 Feb 2001 04:29:43 +0100 (MET) Received: from cicely5.cicely.de (cicely5.cicely.de [fec0:0:0:104::5]) by cicely7.cicely.de (8.11.2/8.11.2) with ESMTP id f1P3TYd51053; Sun, 25 Feb 2001 04:29:35 +0100 (CET) (envelope-from ticso@cicely5.cicely.de) Received: (from ticso@localhost) by cicely5.cicely.de (8.11.1/8.11.1) id f1P3TYY00532; Sun, 25 Feb 2001 04:29:34 +0100 (CET) (envelope-from ticso) Date: Sun, 25 Feb 2001 04:29:33 +0100 From: Bernd Walter To: David Gilbert Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Large MFS on NFS-swap? Message-ID: <20010225042933.A508@cicely5.cicely.de> References: <15000.8884.6165.759008@trooper.velocet.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: <15000.8884.6165.759008@trooper.velocet.net>; from dgilbert@velocet.ca on Sat, Feb 24, 2001 at 04:08:04PM -0500 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, Feb 24, 2001 at 04:08:04PM -0500, David Gilbert wrote: > We have an application which is precompiled, for linux, and stupid. > It uses (at times large) scratch files. We want to run this on our > diskless machines (CPU farm) to cut the per-cpu cost of the > computation ($200/drive starts getting significant at a few hundred > machines). > > Anyways, I've tried: > > [1:26:2025]root@spitfire:/usr/u/dgilbert> mount_mfs -T test -s 2097152 -o nosuid,nodev /dev/null /mnt > [1:27:2026]root@spitfire:/usr/u/dgilbert> df -k > Filesystem 1K-blocks Used Avail Capacity Mounted on > 192.168.255.49:/raid/clients/4 124545452 87451588 27130228 76% / > procfs 4 4 0 100% /proc > mfs:57939 507755 1 467134 0% /mnt > [1:28:2027]root@spitfire:/usr/u/dgilbert> tail -5 /etc/disktab > test|test disk|\ > :ty=removable:dt=SCSI:se#512:nt#1:ns#31:nc#18600:ts#1:rm#4800:\ > :pc#20971520:oc#0:\ > :pa#20971520:oa#0:ta=4.2BSD:ba#4096:fa#512: > > The goal is to have about 2 gig of filesystem available for these > (admittedly stupid) scratch files. You have to raise MAXDSIZE and DFLDSIZ in your kernel config. You may also want to try MD instead of MFS. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message