From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans Reiser Subject: Re: iosched (was Re: Full of surprises - A reiser4 story from userland) Date: Wed, 28 Sep 2005 13:48:21 -0700 Message-ID: <433B0195.8030003@namesys.com> References: <1127914812.12894.96.camel@laptop> <200509281825.49873.vitaly@namesys.com> <1127921286.12894.106.camel@laptop> <433ABD7B.1010903@slaphack.com> <1127932340.12894.149.camel@laptop> <5d8b7b90509281213c95e30c@mail.gmail.com> <200509281952.j8SJq9Uo007371@turing-police.cc.vt.edu> <5d8b7b90509281331ffd953c@mail.gmail.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: <5d8b7b90509281331ffd953c@mail.gmail.com> List-Id: Content-Type: text/plain; charset="us-ascii" To: Islam Amer Cc: "Valdis.Kletnieks@vt.edu" , Fionn Behrens , reiserfs-list@namesys.com Islam Amer wrote: >>The performance boost for any of the provided iosched schemes can be >>positive, negative, imaginary, or complex(*), depending on the actual workload of >>the system, and what reference patterns it generates. >> >> >> >I assumed published benchmarks are conducted under strictly controlled >conditions. > > The thing to do with benchmarks is to ask your friends and mailing lists if the benchmarks seem accurate to them based on their usage experience. The latest reiser4 has performance problems due to bugs added, but prior to it there seemed to be agreement on our mailing list that experiences matched our benchmarks. Am I right? Hans