From owner-freebsd-hubs@FreeBSD.ORG Tue Jun 10 16:08:27 2003 Return-Path: Delivered-To: freebsd-hubs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E555A37B401 for ; Tue, 10 Jun 2003 16:08:27 -0700 (PDT) Received: from luna.rtfmconsult.com (luna.rtfmconsult.com [202.83.72.190]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1D47D43FBD for ; Tue, 10 Jun 2003 16:08:27 -0700 (PDT) (envelope-from jason@rtfmconsult.com) Received: by luna.rtfmconsult.com (Postfix, from userid 42) id 4757748E6F; Wed, 11 Jun 2003 09:08:25 +1000 (EST) Received: from localhost (localhost [127.0.0.1]) by luna.rtfmconsult.com (Postfix) with ESMTP id 400A352D95; Wed, 11 Jun 2003 09:08:25 +1000 (EST) Date: Wed, 11 Jun 2003 09:08:25 +1000 (EST) From: jason andrade To: Ken Smith In-Reply-To: <20030610160605.GB2099@electra.cse.Buffalo.EDU> Message-ID: References: <20030610133105.GA66707@fit.vutbr.cz> <200306101348.h5ADmkeR091829@lurza.secnetix.de> <20030610160605.GB2099@electra.cse.Buffalo.EDU> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-hubs@freebsd.org cc: Oliver Fromme Subject: Re: [FreeBSD-Announce] FreeBSD 5.1 Released! X-BeenThere: freebsd-hubs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: FreeBSD Distributions Hubs: mail sup ftp List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Jun 2003 23:08:28 -0000 On Tue, 10 Jun 2003, Ken Smith wrote: > On Tue, Jun 10, 2003 at 03:48:46PM +0200, Oliver Fromme wrote: > > > How about some kind of a "push model"? > > One disadvantage other than the design/implementation work is load > on the source. Isn't ftp-master suffering a little bit even now? > What happens if all of the first-tier servers are told to do updates > at the same time? this is the advantage of the ssh sync model. e.g like the debian archive, the 'master' has a delay built in as it syncs each site. it is just enough of a delay that it minimizes (not avoids) the initial startup mirror cost for each mirror. > The cron job based updates at least have the advantage of "naturally" > spreading the load on ftp-master out over time a little bit I would > think. My cron jobs running in the wee hours of the morning run at > a different time than the cron jobs running in the wee hours of the > morning in Australia. :-) actually it isn't that cut and dried anymore :-/ this indeed used to be the case, but given that 50% of our requests for freebsd data come from outside australia now, we find that we're running 24/7 at high bandwidth rates so some jobs are not scheduled in 'off peak' hours (for us) anymore.. as we don't have any left. regards, -jason