From owner-freebsd-current@FreeBSD.ORG Wed Jan 14 08:39:12 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7ECE916A4CE for ; Wed, 14 Jan 2004 08:39:12 -0800 (PST) Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id CBE1743D73 for ; Wed, 14 Jan 2004 08:39:01 -0800 (PST) (envelope-from robert@fledge.watson.org) Received: from fledge.watson.org (localhost [127.0.0.1]) by fledge.watson.org (8.12.10/8.12.10) with ESMTP id i0EGbHUd048171; Wed, 14 Jan 2004 11:37:17 -0500 (EST) (envelope-from robert@fledge.watson.org) Received: from localhost (robert@localhost)i0EGbHEH048168; Wed, 14 Jan 2004 11:37:17 -0500 (EST) (envelope-from robert@fledge.watson.org) Date: Wed, 14 Jan 2004 11:37:17 -0500 (EST) From: Robert Watson X-Sender: robert@fledge.watson.org To: Richard Coleman In-Reply-To: <40056CB0.7080703@mindspring.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-current@freebsd.org cc: John Kennedy cc: Tim Kientzle Subject: Re: FreeBSD CVS Question X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Jan 2004 16:39:12 -0000 On Wed, 14 Jan 2004, Richard Coleman wrote: > > FYI, I've often found that tunneling CVS over SSH is substantially faster > > than NFS. This appears to be a property of CVS doing some sort of > > explicit pipelining, whereas with NFS, it spends a lot of time blocked on > > synchronous stat() operations against the CVS repository. Of course, last > > time I used CVS over NFS seriously was on 10mbps ethernet, so this well be > > a non-event with gigabit. :-) Setting up the SSH connection is slightly > > more expensive, but the reduced apparent latency makes a big difference. > > If you are using NFS, why do a cvs checkout on the clients at all? Just > do the checkout once (on the NFS master) and mount /usr/src on the > clients. I'm doing this for both src and ports using the procedures > outlined in the development(7) man page. Ah, because I maintain lots of systems with slightly different source revisions, so I have a checkout per machine, and build on each machine. If they were all running the same revision, I'd build all on the central box, and then make installworld/etc over NFS. > But I do agree with Robert that if you want to do an actual cvs > checkout, use ssh instead. Once you've created ssh keys and defined > CVS_RSH, it's just as convenient as NFS and faster. In fact, with recent versions of CVS on FreeBSD, you don't even need to set CVS_RSH -- we default to ssh rather than rsh. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Senior Research Scientist, McAfee Research