From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans Reiser Subject: Re: file name match speed Date: Mon, 29 Aug 2005 16:34:28 -0700 Message-ID: <43139B84.4050707@namesys.com> References: <1125183549.5569.10.camel@localhost.localdomain> <43136DC6.5000005@namesys.com> <1125356363.5544.175.camel@localhost.localdomain> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <1125356363.5544.175.camel@localhost.localdomain> List-Id: Content-Type: text/plain; charset="us-ascii" To: mingz@ele.uri.edu Cc: reiserfs Ming Zhang wrote: >On Mon, 2005-08-29 at 13:19 -0700, Hans Reiser wrote: > > >>Ming Zhang wrote: >> >> >> >>>Hi folks >>> >>>I would like to investigate the file name look up performance here. >>> >>>assumed i have file name that is in digits, like 1,2,5,12, 43, 61, >>>98,300... >>> >>>so how they will be hashed. >>> >>>and if i want to look up file named as 64 while no such file available, >>>any quick way to find the file 61 in upper example? >>> >>>this is like a database query. select first X with X <=64. :) >>> >>> >>>Ming >>> >>> >>> >>> >>It would be useful to add such functionality to sys_reiser4. >> >> > >hope u can add to your todo list and hope later i can contribute some. > >Ming > > > > > > It is on our todo list, and it is important, but there are about 5 years of features ahead of it. If you feel the need for it, I encourage you to contribute.:) Be aware that it will be highly political, sigh..... but important..... Hans