From owner-freebsd-current Thu Nov 20 14:02:30 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id OAA12252 for current-outgoing; Thu, 20 Nov 1997 14:02:30 -0800 (PST) (envelope-from owner-freebsd-current) Received: from pat.idi.ntnu.no (0@pat.idi.ntnu.no [129.241.103.5]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id OAA12217 for ; Thu, 20 Nov 1997 14:02:15 -0800 (PST) (envelope-from Tor.Egge@idi.ntnu.no) Received: from idi.ntnu.no (tegge@ikke.idi.ntnu.no [129.241.111.65]) by pat.idi.ntnu.no (8.8.8/8.8.8) with ESMTP id WAA13101; Thu, 20 Nov 1997 22:00:19 +0100 (MET) Message-Id: <199711202100.WAA13101@pat.idi.ntnu.no> To: sos@FreeBSD.dk Cc: jkh@time.cdrom.com, hasty@rah.star-gate.com, toor@dyson.iquest.net, sprice@hiwaay.net, smp@csn.net, current@FreeBSD.ORG Subject: Re: make world time???/ In-Reply-To: Your message of "Mon, 17 Nov 1997 08:32:10 +0100 (MET)" References: <199711170732.IAA09348@sos.freebsd.dk> X-Mailer: Mew version 1.70 on Emacs 19.34.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Thu, 20 Nov 1997 22:00:18 +0100 From: Tor Egge Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > Same observation here, I just went dual on my P6 system, and > it hardly got any better in a make world. I notice that it spends > ALOT of its time in system, so our megalock might be the culprit... This is due to how CPU usage accounting is currently handled. 5 make worlds gave the following result with a dual P6 machine: make.world1: 9950.08 real 1818.02 user 7944.37 sys make.world2: 9995.30 real 1857.03 user 7778.47 sys make.world3: 9840.08 real 1736.67 user 7857.49 sys make.world4: 9823.49 real 1726.97 user 7874.01 sys make.world5: 9839.31 real 1731.59 user 7861.62 sys After some changes to statclock and hardclock, I got more reasonable numbers: make.world1: 9941.28 real 5616.14 user 3932.16 sys make.world2: 9914.21 real 5632.65 user 3973.46 sys make.world3: 9779.39 real 5621.38 user 3939.89 sys make.world4: 9770.91 real 5622.68 user 3942.34 sys - Tor Egge