Date: Thu, 2 Nov 2000 13:21:40 -0800 From: Alfred Perlstein <bright@wintelcom.net> To: Marius Bendiksen <mbendiks@eunet.no> Cc: Matt Dillon <dillon@earth.backplane.com>, Randell Jesup <rjesup@wgate.com>, arch@FreeBSD.ORG Subject: Re: Like to commit my diskprep Message-ID: <20001102132140.W20567@fw.wintelcom.net> In-Reply-To: <Pine.BSF.4.05.10011022216250.13255-100000@login-1.eunet.no>; from mbendiks@eunet.no on Thu, Nov 02, 2000 at 10:19:09PM %2B0100 References: <200011021725.eA2HPeM38718@earth.backplane.com> <Pine.BSF.4.05.10011022216250.13255-100000@login-1.eunet.no>
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* Marius Bendiksen <mbendiks@eunet.no> [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
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