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Article #122

Re: More Canter and Siegel...

#122
From: Doug Humphrey
Date: Tue, 31 May 1994 02:59
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># 2. One network expert said that he could put an 80386/33 with Linux up and a
>#    reasonably tuned FTPD and with a T1, it could easily support 400 
>#    simultaneous FTP connections with at least 14K speed each.  

I have to say that this sounds somewhat unlikely.  There would have to 
be a number of other processors involved, all doing other support tasks
for the FTP processor, etc.

Oh, and the writer should be told that a T1 is 1.544 mbits/sec; if we 
assume that you can actually get that level of throughput down it
(as almost never happens in nature) then 100 connections at 14.4k 
is 1.44 megabits/second; I guess the other 300 connections are 
going to go down the remaining 100k/second?  Put another way, 400 
connections down as T1, simultaniously, would be 3.86 k/second
(a bit better than 2400 baud). 

That assumes a perfect T1 at 100% utilization, no overhead, and a 
hell of a tailwind.  Better to figure 1200 baud, just to be safe.

Doug
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From: doug@ss1.digex.net (Doug Humphrey)
Newsgroups: digex.general,csn.ml.com-priv
Subject: Re: More Canter and Siegel...
Date: 30 May 1994 22:59:50 -0400
Organization: Express Access Online Communications, Greenbelt, MD USA
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