From owner-freebsd-hackers Sat Apr 22 20: 5:54 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from corinth.bossig.com (mail.dohboys.com [208.26.253.10]) by hub.freebsd.org (Postfix) with ESMTP id 0026137B949 for ; Sat, 22 Apr 2000 20:05:47 -0700 (PDT) (envelope-from kstewart@3-cities.com) Received: from 3-cities.com (unverified [208.26.242.92]) by corinth.bossig.com (Rockliffe SMTPRA 4.2.1) with ESMTP id ; Sat, 22 Apr 2000 20:09:57 -0700 Message-ID: <39026874.F652A405@3-cities.com> Date: Sat, 22 Apr 2000 20:05:24 -0700 From: Kent Stewart Organization: Columbia Basin Virtual Community Project X-Mailer: Mozilla 4.72 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Matthew Dillon Cc: Michael Bacarella , Alfred Perlstein , Kevin Day , hackers@FreeBSD.ORG Subject: Re: Double buffered cp(1) References: <200004221736.KAA55484@apollo.backplane.com> <3901F277.66DDDDAF@3-cities.com> <200004222317.QAA56834@apollo.backplane.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Matthew Dillon wrote: > > :I tested build worlds where I created my /usr/obj on one controller > :and left the /usr/src on a different controller. The buildworlds are > :pretty much I/O bound. They ran faster but not that much faster when > > Buildworlds are NOT I/O bound. They are *CPU* bound. This becomes > glaringly obvious when you mount /usr/src and /usr/obj over NFS > and look at the network traffic. > > You are right but that is because I haven't started keeping record on 4.0-Stable and we were comparing apples and oranges. A buildworld of 3.4-Stable required around 2000u seconds using gcc-2.8.2 on my system. Setiathome, which is running at a nice of 19, still consumed 90% of the cpu. A buildworld on 4.0-Stable required 3500u seconds using gcc-2.95.2 and setiathome didn't accrue any appreciable cpu time during the build. There were definitely some changes there :). Kent -- Kent Stewart Richland, WA mailto:kstewart@3-cities.com http://www.3-cities.com/~kstewart/index.html FreeBSD News http://daily.daemonnews.org/ SETI(Search for Extraterrestrial Intelligence) @ HOME http://setiathome.ssl.berkeley.edu/ Hunting Archibald Stewart, b 1802 in Ballymena, Antrim Co., NIR http://www.3-cities.com/~kstewart/genealogy/archibald_stewart.html To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message