From owner-freebsd-current Wed Mar 11 09:07:15 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id JAA08692 for freebsd-current-outgoing; Wed, 11 Mar 1998 09:07:15 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from duey.hs.wolves.k12.mo.us (root@duey.hs.wolves.k12.mo.us [207.160.214.9]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id JAA08678; Wed, 11 Mar 1998 09:07:07 -0800 (PST) (envelope-from cdillon@wolves.k12.mo.us) Received: from duey.hs.wolves.k12.mo.us (cdillon@duey.hs.wolves.k12.mo.us [207.160.214.9]) by duey.hs.wolves.k12.mo.us (8.8.7/8.8.7) with SMTP id LAA13460; Wed, 11 Mar 1998 11:06:43 -0600 (CST) (envelope-from cdillon@wolves.k12.mo.us) Date: Wed, 11 Mar 1998 11:06:43 -0600 (CST) From: Chris Dillon X-Sender: cdillon@duey.hs.wolves.k12.mo.us To: Amancio Hasty cc: "Jordan K. Hubbard" , "Alok K. Dhir" , current@FreeBSD.ORG, Daniel Ingber Subject: Re: Amazing :-) In-Reply-To: <199803110740.XAA04756@rah.star-gate.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 10 Mar 1998, Amancio Hasty wrote: > > > I just enabled softupdates on all filesystems except root on my SMP > > > -current machine (dual 300Mhz Pentium II, Adaptec 2940UW SCSI, 256MB RAM). > > > The "make world" time just went from ~6 hours to 2 hours 20 mins. > > > > That actually says more odd things about your disk layout. On The > > dual PII/300 box we have here with 128MB of RAM and /usr/{src,obj} > > striped across a 5 disk CCD (all IBM DCAS 4.3GB 5400 RPM drives), the > > build time is 1:25 without any sort of soft updates being used, just > > async mounts. > > Me seriously thinks that you need 10000 rpms disks real bad 8) > Something like this: > > sd0: type 0 fixed SCSI 2 > > On a serious note if you are constantly doing "make worlds" it pays to > have a very fast disk subsystem and the group can consider my note > a hint 8) > I think a couple of people have found out those particular 5400RPM drives are as fast (and in at least one case, faster) than some other-brand 7200RPM drives. :-) Platter rotation speed isn't the only indicator of overall speed as the manufacturers may want you to believe (though common sense tells you that faster platter rotation CAN reduce certain latencies, but obviously not in every case), -- Chris Dillon --- cdillon@inter-linc.net --- cdillon@wolves.k12.mo.us /* Powered by FreeBSD, the best operating system on the planet. Available for Intel x86 and compatible computers. SPARC and Alpha ports currently under development. (http://www.freebsd.org) */ _____________________________________________________________________ Windows 95/NT - 32 bit extensions and a graphical shell for a 16 bit | patch to an 8 bit operating system originally coded for a 4 bit | microprocessor, written by a 2 bit company that can't stand 1 bit of | competition. -UGU | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message