From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans Reiser Subject: Re: Reiser4 / Reiserfs bonnie++ performance comparison Date: Fri, 09 Jul 2004 22:08:11 -0700 Message-ID: <40EF79BB.1010200@namesys.com> References: <20040709165924.27fabe63@philou.gramoulle.local> <200407091724.43326.marcel@hilzinger.hu> <40EEBC97.5090703@burst.net> <200407091706.54256.marcelo@macp.eti.br> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <200407091706.54256.marcelo@macp.eti.br> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Marcelo Pacheco Cc: reiserfs-list@namesys.com Marcelo Pacheco wrote: >When you delete a file what you need to do is to remove the directory entry, >the inode and the file allocation structures. Reiser3 uses one key > ^key^pointer > per file >block (4kb), while reiser4 uses extents, which could be huge (100's of MB) >per key, > ^key^pointer > so there's far less things to remove when you remove a huge file on >Reiser4 than on Reiser3. > >Marcelo Pacheco > >Em Sex 09 Jul 2004 12:41, Chris Humphries escreveu: > > >>WHOA! >> >>Marcel Hilzinger wrote: >> >> >>>You mustn't belive in Benchmarks :-). Try it empirically, and you will >>>see, that for big files, Reiser4 is much faster, then ReiserFS was. Some >>>example >>> >>>Deleting a 6,8GB DVD iso image (average of 10 tests): >>>ext3 14,15 sec >>>reiser3.6 12,67 sec >>>reiser4 1,23 sec >>> >>>Deleting 3 GB of MP3 files (4MB average file size, 10 tests): >>>ext3 11,91 sec >>>reiser3.6 4,56 sec >>>reiser4 1,86 sec >>> >>>Marcel >>> >>> > > > >