From owner-freebsd-fs Sat Oct 10 19:55:15 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id TAA02823 for freebsd-fs-outgoing; Sat, 10 Oct 1998 19:55:15 -0700 (PDT) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id TAA02788 for ; Sat, 10 Oct 1998 19:55:06 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id MAA13659; Sun, 11 Oct 1998 12:24:48 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id MAA23208; Sun, 11 Oct 1998 12:24:47 +0930 (CST) Message-ID: <19981011122446.P3369@freebie.lemis.com> Date: Sun, 11 Oct 1998 12:24:46 +0930 From: Greg Lehey To: francisco@natserv.com Cc: freebsd-fs@FreeBSD.ORG Subject: Re: Optimizing space utilization References: <19981010153725.T3369@freebie.lemis.com> <199810110250.WAA20883@federation.addy.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <199810110250.WAA20883@federation.addy.com>; from Francisco Reyes on Sat, Oct 10, 1998 at 10:50:47PM -0000 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Saturday, 10 October 1998 at 22:50:47 -0000, Francisco Reyes wrote: > > On 10-Oct-98 Greg Lehey wrote: >>> If I know how many files I have for a fs I am trying to see if space >>> could be saved by using less inodes. >> >> None. You need exactly one inode per file. > > I didn't phrase that question properly. > What I meant was: if I do a newfs and create less inodes, will I save any > space. Yes. > Today I was able to check. > On a 1 Gig partition by using 1/4 the number of inodes (sent -i 16384 to > newfs) I was able to save a little over 30MB. A 3% saving. :-) > I was still left with over 64K inodes, which I doubt I will use. Interesting. At 262 bytes per inode, I'd only expect a saving of about 12 MB. > Thanks for the reference to the paper in /usr/share/doc/...fastfs > Also found another paper in the "papers" directory which relates to > performance. You're welcome > Those should make good subway reading. :-) It would be interesting what people looking over your shoulder would think :-) Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message