Marc Zucchelli on 23 Feb 2006 21:24:35 -0000


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[PLUG] Is my 'bandwidth' math right?


I have a customer who was entertaining the notion of
hosting his server in house.  I talked him out of it,
but I was curious about whether or not the bandwidth
he could get would handle his site.  He is able to get
a business connection with 1Mbit upstream.

1Mbit = 1024bits * 1024bits = 1,048,576bits

His typical webpage, pictures includes is about 273k

273k = 1024bytes * 273 * 8bits = 2,236,416bits

2,236,416 / 1,048,576 = 2.1 seconds.

So it will take 2.1 seconds to transfer ONE of his web
pages, probably 3 or 4 seconds since that math doesnt
include the information in the tcp, ip, and network
stacks

I know people have used T1's to host servers, which is
only a little bit faster, but still in the same
ballpark.  It doesnt seem reasonable it should take so
long to download a single page, and if he had multiple
users on the site simulateasly forget about it.

Is my reasoning correct?


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