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- From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
- Newsgroups: comp.sys.sgi
- Subject: Re: 4.0.5 distribution bottleneck
- Message-ID: <ouf5r8k@rhyolite.wpd.sgi.com>
- Date: 23 Aug 92 15:47:02 GMT
- References: <32167@adm.brl.mil>
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 33
-
- In article <32167@adm.brl.mil>, karron@karron.med.nyu.edu (Dan Karron (karron@nyu.edu)) writes:
- >
- > It seems that you have to ask for the 4.0.5 update, but now that
- > EVERYONE is asking, the TAC is giving ship date into next month.
- >
- > Now, why not distribute it by a one time only anon ftp account
- > on sgi.com ?
-
- Because sgi.com does not have a direct T3 connection to the Internet.
-
- People have tried copying the 600MB of a distribution over the Internet
- from sgi.com to various places. (E.g. Air Force bases, and so not
- really violating the AUP). If you compute how long a single copy
- requires with the 56 Kbit/sec or 5 KByte/sec link to sgi.com, you
- become unenthusiastic. If you imagine the effects of 10,000 people all
- trying to do it at once, you'll laugh.
-
- Even if sgi.com had a T3 link, I doubt it would work. Within the SGI
- corporate network, we do a lot of network installations. Every one of
- the 1-4 builds/week is supposed to be installed on a thousand or two
- machines. I doubt more than 100 machines have more than 80% of the
- builds installed, but sooner or later, all machines have major
- milestones installed. In the old days that was all done from one
- machine. Not any more. There just isn't enough bandwidth either on
- one machine or to one machine.
-
- The moral is that in some cases "station wagon net" has better latency
- and better through-put than any current or planned network. ("Station
- wagon net" is a station wagon filled with CD-ROMs (used to be tapes)
- and driven accross the country.)
-
-
- Vernon Schryver, vjs@sgi.com
-