Date: Mon, 31 Jul 2000 12:46:59 -0700 From: Alfred Perlstein <bright@wintelcom.net> To: Steve Carlson <stevec@nbci.com> Cc: freebsd-fs@FreeBSD.ORG Subject: Re: FFS performance for large directories? Message-ID: <20000731124658.G4854@fw.wintelcom.net> In-Reply-To: <B5AB2266.BEA%stevec@nbci.com>; from stevec@nbci.com on Mon, Jul 31, 2000 at 12:32:39PM -0700 References: <B5AB2266.BEA%stevec@nbci.com>
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* Steve Carlson <stevec@nbci.com> [000731 12:33] wrote: > First off, my apologies in advance if this is not the type of technical > question expected in this forum - I checked the charter and archives to get > a feel for the theme, but still wasn't sure if this would be inappropriate. > -questions was no help, either... > I'm trying to figure out at what point I can expect performance issues > with an FFS filesystem if I have directories with a massive number of small > files or symlinks. As far as I understand it, there are a number of inodes > located within a cylinder group, and the inodes for files are ideally placed > in the same cylinder group as their parent directory. But if I were to have > a massive number of small files or symlinks in a directory, wouldn't I run > out of local inodes and thus start to see a performance issue when working > in that directory? How can I determine the maximum number of files I should > safely place in a directory without my performance suffering? I've been > unable to find commentary on this in print or on the web - everything I've > read centers only on performance issues when the disk becomes full.
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