From owner-freebsd-arch Thu Nov 2 13:21:47 2000 Delivered-To: freebsd-arch@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id A96DE37B4C5 for ; Thu, 2 Nov 2000 13:21:44 -0800 (PST) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id eA2LLef12044; Thu, 2 Nov 2000 13:21:40 -0800 (PST) Date: Thu, 2 Nov 2000 13:21:40 -0800 From: Alfred Perlstein To: Marius Bendiksen Cc: Matt Dillon , Randell Jesup , arch@FreeBSD.ORG Subject: Re: Like to commit my diskprep Message-ID: <20001102132140.W20567@fw.wintelcom.net> References: <200011021725.eA2HPeM38718@earth.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.4i In-Reply-To: ; from mbendiks@eunet.no on Thu, Nov 02, 2000 at 10:19:09PM +0100 Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * Marius Bendiksen [001102 13:19] wrote: > > Not to mention the bytes/inode (-i) If you want fsck to go fast on a > > big filesystem, reducing the number of inodes helps a lot. I find myself > > using -i 32768 or -i 65536 or even higher numbers on partitions which > > hold big database files. > > FFS is woefully inadequate at handling databases, due to the block > indirection, but e.g. Oracle will allow you to run directly on top > of a device. Block indirection could be optimized by attempting to allocate indirect blocks in the same area as either the inode or datablocks that the indirect blocks address. > As to the cylinder group count, couldn't we, rather than changing the > default, have a new flag to newfs which takes it to the maximum possible, > and preferrably another one to try to keep the number of cylinder groups > sane by pushing the block size etc up automatically? Yes, patches would be nice. :) -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message