From owner-freebsd-current Tue Nov 11 17:39:04 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id RAA14067 for current-outgoing; Tue, 11 Nov 1997 17:39:04 -0800 (PST) (envelope-from owner-freebsd-current) Received: from sendero.i-connect.net (nomis.i-Connect.Net [206.190.143.100]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id RAA14057 for ; Tue, 11 Nov 1997 17:39:00 -0800 (PST) (envelope-from shimon@debian.org) Received: (qmail 20951 invoked by uid 1000); 12 Nov 1997 01:39:28 -0000 Message-ID: X-Mailer: XFMail 1.2-beta-111097 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit MIME-Version: 1.0 In-Reply-To: <3468FAB7.FF6D5DF@whistle.com> Date: Tue, 11 Nov 1997 17:39:28 -0800 (PST) Organization: Atlas Telecom From: Simon Shapiro To: Julian Elischer Subject: Re: make world time???/ Cc: current@FreeBSD.ORG, Burton Sampley , John-Mark Gurney Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Hi Julian Elischer; On 12-Nov-97 you wrote: ... Looks to me that, for a full, plain build, the limit has stabilized arount the 100 minutes. I perfored some I/O testing, and I think the problem is not I/O releated. It may be that we are CPU bound, but will not be surprized if we are actually memory bandwidth limited. Having more memory than about 256MB seems wasteful (using up 64MB for tmp filesystems). Swap activity was at zero, disk I/O at about 480 I/O's per second, which is less than 1/3 of what the system is capable of, but CPU utilization was at 96% user peak, about 80% average. I wonder how CPU utilization is computed. It may actually be measuring memory, not CPU. Setting the F/S to async may improve I/O processing in the kernel more than on the disks. I'll have to wait for Goliath to arrive... --- If Microsoft Built Cars: Every time they repainted the lines on the road, you'd have to buy a new car. Sincerely Yours, Simon Shapiro Atlas Telecom Senior Architect 14355 SW Allen Blvd., Suite 130 Beaverton OR 97005 Shimon@i-Connect.Net Voice: 503.799.2313