From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans Reiser Subject: Re: Resier Fragmentation Effects (was compression vs performance) Date: Thu, 08 Apr 2004 22:53:08 -0700 Message-ID: <40763A44.4040107@namesys.com> References: <3DF9165145FACB4C96977FF650C1E9040C469DBF@its-mail1.its.corp.gwl.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: <3DF9165145FACB4C96977FF650C1E9040C469DBF@its-mail1.its.corp.gwl.com> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: "Burnes, James" Cc: Stewart Smith , Tom Vier , Scott Young , reiserfs-list@namesys.com Burnes, James wrote: >I thought nearly all filesystems designed since Berkeley FFS were nearly >immune to fragmentation problems. > >After reading the following analysis at Harvard, it seems that >fragmentation is still a problem. > >http://www.eecs.harvard.edu/~keith/research/tr94.html > > > Yeah, I wish I had read this in 94. V3 suffers from the same problems as FFS does as described in the abstract (all that I read, sorry about that, I really am a bit busy, so unless someone suggests I should read more.... ) . V4 cures it though. -- Hans