From owner-freebsd-questions@FreeBSD.ORG Fri Nov 16 04:08:57 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0505E16A41A for ; Fri, 16 Nov 2007 04:08:57 +0000 (UTC) (envelope-from chuckr@chuckr.org) Received: from mail3.sea5.speakeasy.net (mail3.sea5.speakeasy.net [69.17.117.5]) by mx1.freebsd.org (Postfix) with ESMTP id DDA7E13C4BB for ; Fri, 16 Nov 2007 04:08:56 +0000 (UTC) (envelope-from chuckr@chuckr.org) Received: (qmail 24316 invoked from network); 16 Nov 2007 04:08:50 -0000 Received: from april.chuckr.org (chuckr@[66.92.151.30]) (envelope-sender ) by mail3.sea5.speakeasy.net (qmail-ldap-1.03) with AES256-SHA encrypted SMTP for ; 16 Nov 2007 04:08:50 -0000 Message-ID: <473D1780.104@chuckr.org> Date: Thu, 15 Nov 2007 23:07:28 -0500 From: Chuck Robey User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.8.1.9) Gecko/20071107 SeaMonkey/1.1.6 MIME-Version: 1.0 To: Jonathan Horne References: <473B6AF1.4010604@smo.de> <473B6C63.9060407@gmail.com> <200711151935.10550.freebsd@dfwlp.com> In-Reply-To: <200711151935.10550.freebsd@dfwlp.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: unimpressive buildworld time X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Nov 2007 04:08:57 -0000 Jonathan Horne wrote: > On Wednesday 14 November 2007 03:45:07 pm Aryeh M. Friedman wrote: >>> Impressive ;-) My main machine (with an Athlon XP @ 2GHz) takes ~2 >>> hours to build kernel and world (I use a script to do that). My >>> other box is running -CURRENT and takes ~11 hours to build kernel >>> and world (Celeron 500...). >>> >>> Just to supply some numbers that "go the other direction" :-) >> With no -j and running gnome and doing other things in the foreground >> (watching a avi) 1 hr 3 mins on a e6850 w/ 4 gig (amd64) > > p4 540 3.2GHz, 1GB ram: > > -------------------------------------------------------------- >>>> World build completed on Thu Nov 15 19:15:05 CST 2007 > -------------------------------------------------------------- > > real 63m8.635s > user 102m44.096s > sys 10m44.889s > [root@athena /usr/src]# I have a quad core machine, and I found that (after a bit of checking) that about 95% of my improvements could be cotten with a -j4 setting. It did keep on improving, but only very little, up to -j8. AT -j8 it was about 18 minutes. I do have more accurate numbers, if folks are curious. I did buildworlds, so no kernel built, and the environment was with all the files from a previous build in place. > heh, i have appropriately renamed the thread. :) with -j 8 > > cheers,