From owner-freebsd-hackers Sun Apr 14 14:47:44 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA16889 for hackers-outgoing; Sun, 14 Apr 1996 14:47:44 -0700 (PDT) Received: from ref.tfs.com (ref.tfs.com [140.145.254.251]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id OAA16880 for ; Sun, 14 Apr 1996 14:47:41 -0700 (PDT) Received: (from julian@localhost) by ref.tfs.com (8.7.3/8.6.9) id NAA05263; Sun, 14 Apr 1996 13:55:05 -0700 (PDT) Message-Id: <199604142055.NAA05263@ref.tfs.com> Subject: Re: Unices are created equal, but ... To: groudier@iplus.fr (Gerard Roudier) Date: Sun, 14 Apr 1996 13:55:05 -0700 (PDT) From: "JULIAN Elischer" Cc: dennis@etinc.com, hackers@freebsd.org, linux-kernel@vger.rutgers.edu In-Reply-To: from "Gerard Roudier" at Apr 14, 96 11:38:31 am X-Mailer: ELM [version 2.4 PL25 ME8b] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > ( Did you remember some recent thread in the linux kernel list?) Sorry I am not on the Linux list.. > > 2 - People that claim that Unix B is FASTER than Unix A rarely > indicate the versions of systems (nor the used benchmarks). > I was expecting that Unix B version 2.0.5 was still a little FASTER that > Unix A version 1.3.87, and I get the OPPOSITE. > The difference is that I wrote that my benckmark is "questionnable" and > give enough informations to guess missing informations. > Most of Unix end users are not able to guess the MISSING informations. > They BELEIVE what we CLAIM. Ok, here is my attempt at the missing information.... I would expect the following to be true between Linix 1.3.x and FreeBSD 2.0.5. category 1:--Linux faster in: context switch, including some system calls. possibly some program startup. possibly pipe code. possibly FP emulation. possibly FP exception handling. Any test that does a lot of filesystem meta-data manipulation. e.g. file creation and deletion. category 2:--FreeBSD 2.0.5 faster in: Anything to do with networking Anything using a raw tape or disk device. Any benchmark that loaded the system very heavily, especially if it produced swapping. Any benchmark that tested high-speed large sustained IO to files. category 3:--Linux and FreeBSD 2.0.5 about equivalent in: Anything that relies mostly on plain CPU with no or little OS involvement. (as both use the same cpu.) Obvioulsy, any benchmark that mainly tests category 1 and 3 will get a different result to one that tests mainly 2 and 3. My guess is that the Byte Benchmarks don't do much in category 2 > > 3 - It seems to me that now, current Linux is as FAST as FreeBSD-current. > Good news!!!!!!!!!! welll, current Linux is as fast in some places as old FreeBSD.. What you say MIGHT also be true, but this is not proved by your tests. because: a/ you only test categories 1 and 3 b/ You do not test current FreeBSD If you wish to test current FreeBSD and include test from category 2 as well, then I suspect that you might find a different story. THE REASON: FreeBSD and Linux developers have done work in different places.. each has strong and weak points. > It is difficult to have both Linux and FreeBSD in their current version. > Only linux is up to date on my machine. > If you are a FreeBSD-current user and if you have about the same > configuration as mine, can you run the old BYTE benchmark > and send to me your results? I don't think it would be useful unless we had EXACTLY the same hardware.. I have seen small differences make up to 50% difference.. Linux made great improvements in the last year. So did FreeBSD. Most of the areas indicated as being Weak points for FreeBSD in 2.0.5 were redone in -current. Of course this now means that Other parts are the "weak points" :) > Thanks per advance, > > Best Regards, Gerard. > julian +----------------------------------+ ______ _ __ | __--_|\ Julian Elischer | \ U \/ / On assignment | / \ julian@tfs.com +------>x USA \ in a very strange | ( OZ ) 300 lakeside Dr. oakland CA. \___ ___ | country ! +- X_.---._/ USA+(510) 645-3137(wk) \_/ \\ > v LL LL