From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Mahoney Subject: Re: Reiser 3 and ACLs slow Date: Wed, 17 Aug 2005 14:06:31 -0400 Message-ID: <43037CA7.7090905@suse.com> References: <430372A4.1020202@perkel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <430372A4.1020202@perkel.com> List-Id: Content-Type: text/plain; charset="us-ascii" To: Marc Perkel Cc: reiserfs-list@namesys.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Marc Perkel wrote: > I'm trying Reiser 3 and ACLs and the file system got really slow. Is > thios typical for ACLs and reiser 3 to slow dow a lot? Is there some > trick I'm missing? > > Sorry, but unfortunately it's typical. Reiser3 extended attributes had to be implmented using hidden, regular files. So, when you create a file in a directory with a default ACL, it's actually creating 3 files and a directory. However, once the ACL is in memory, it stays there as long as the inode is cached. For heavy creation activity, Reiser3 ACL performance is abysmal. Reiser3 *should* have been able to have ACLs implemented as another item type, but the implementation has item types hard coded and it would panic older systems if another item type was added. - -Jeff - -- Jeff Mahoney SuSE Labs -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFDA3ymLPWxlyuTD7IRArDnAJ99pwYlXwTkObyiWelD5WgikiChVQCeNfTV pwMGNT9leUNOXmd2kRD9DRQ= =1eGt -----END PGP SIGNATURE-----