Date: Wed, 20 Mar 2002 13:31:35 -0800 (PST) From: Julian Elischer <julian@elischer.org> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: arch@freebsd.org Subject: Re: UFS2, GEOM & DARPA - don't get all excited, OK ? Message-ID: <Pine.BSF.4.21.0203201313500.6793-100000@InterJet.elischer.org> In-Reply-To: <13286.1016656684@critter.freebsd.dk>
next in thread | previous in thread | raw e-mail | index | archive | help
One thing to look at: Inode in dirent allocation.. there was a Usenix paper on this .. It made a huge performance difference in some cases.. on the first link (one link to file only), you stash the inode info into the dir. On creation of a 2nd link you actually allocate an inode. -------In the 1997 Usenix technical conference proceedings:---------- "Embedded inodes and Explicit Grouping: Exploiting Disk bandwidth for small files" Gregory R Ganger, M.Frans Kaashoek. MIT ----------------------------- This paper actually describes several improvements to FFS, including the one I mentionned above. Kirk of course knows about this, but it should be compatible with Greg's soft-updates work, and would be very cool to have.. All the work for the paper was done for FFS under OpenBSD so it should be directly relevent. (It would be interesting to ask Greg if we would be interested at all in participating in an FFS rewrite because he's only second to Kirk on the topic, even if only on a consultation basis) On Wed, 20 Mar 2002, Poul-Henning Kamp wrote: [NON-Text Body part not included] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.21.0203201313500.6793-100000>