From owner-freebsd-stable Fri Jul 21 7:37:28 2000 Delivered-To: freebsd-stable@freebsd.org Received: from wall.polstra.com (rtrwan160.accessone.com [206.213.115.74]) by hub.freebsd.org (Postfix) with ESMTP id 2EC1D37B713 for ; Fri, 21 Jul 2000 07:37:18 -0700 (PDT) (envelope-from jdp@polstra.com) Received: from vashon.polstra.com (vashon.polstra.com [206.213.73.13]) by wall.polstra.com (8.9.3/8.9.3) with ESMTP id HAA20325 for ; Fri, 21 Jul 2000 07:37:16 -0700 (PDT) (envelope-from jdp@polstra.com) From: John Polstra Received: (from jdp@localhost) by vashon.polstra.com (8.9.3/8.9.1) id HAA45795; Fri, 21 Jul 2000 07:37:15 -0700 (PDT) (envelope-from jdp@polstra.com) Date: Fri, 21 Jul 2000 07:37:15 -0700 (PDT) Message-Id: <200007211437.HAA45795@vashon.polstra.com> To: stable@freebsd.org Reply-To: stable@freebsd.org Subject: Re: Re[2]: CVSup server loads (was: Stable broken) In-Reply-To: <15758610447.20000721101850@buz.ch> References: <12457756279.20000721100436@buz.ch> <39780647.10DBCA85@urx.com> <15758610447.20000721101850@buz.ch> Organization: Polstra & Co., Seattle, WA Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In article <15758610447.20000721101850@buz.ch>, Gabriel Ambuehl wrote: > Friday, July 21, 2000, 10:13:59 AM, you wrote: > > I was only adding a comment that one of the mirror owners made. The > > checking of the MD5 signature was supposed to be the limiting factor. [...] > > What about having cached MD5 sigs on the server as well as on the > client (tough there's the problem with the people who like to patch > their sources, but anyway)? I mean you only need to regenerate them > when you update a file... Before this thread goes too far, let me tell you that I don't think the cost of the MD5 calculations is at all significant. In my CVSup profiling tests the MD5 calculation has never even made a blip on the radar screen. Calculating an MD5 signature is very cheap. It takes less CPU time than the venerable "sum" command. John -- John Polstra jdp@polstra.com John D. Polstra & Co., Inc. Seattle, Washington USA "Disappointment is a good sign of basic intelligence." -- Chögyam Trungpa To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message