Date: Wed, 11 Jun 2003 09:08:25 +1000 (EST) From: jason andrade <jason@rtfmconsult.com> To: Ken Smith <kensmith@cse.Buffalo.EDU> Cc: Oliver Fromme <olli@lurza.secnetix.de> Subject: Re: [FreeBSD-Announce] FreeBSD 5.1 Released! Message-ID: <Pine.GSO.4.50.0306110905490.619-100000@luna.rtfmconsult.com> In-Reply-To: <20030610160605.GB2099@electra.cse.Buffalo.EDU> References: <20030610133105.GA66707@fit.vutbr.cz> <200306101348.h5ADmkeR091829@lurza.secnetix.de> <20030610160605.GB2099@electra.cse.Buffalo.EDU>
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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
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