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Date:      Mon, 08 Nov 2004 01:22:25 -0600
From:      Nikolas Britton <freebsd@nbritton.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: re bittorrent
Message-ID:  <418F1EB1.1000801@nbritton.org>
In-Reply-To: <418EEDE4.1040000@nbritton.org>
References:  <200411080022.08394.nbco@screaming.net> <418EBDB7.90709@gmx.de> <418EE088.9000903@nbritton.org> <418EEDE4.1040000@nbritton.org>

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Nikolas Britton wrote:

> Nikolas Britton wrote:
>
>> Quinn Ellis wrote:
>>
>>> Why do you download with bittorrent as opposed to FTP?
>>
>>
>>
>> Lets do the math...
>> you'll note that http://torrents.freebsd.org:8080/ at this moment 
>> says there's been 1978 completed downloads.
>> Lets pick an arbitrary average size for each file downloaded: 388MB
>>
>> 388 * 1978 = 767.5GB
>>
>> 11/7@8:30PM: Now
>> 11/6@5:00PM: Official availability of 5.3
>> ------------
>> 27.5 Hours
>>
>> 767.5 / 27.5 = 27.9GB/h / 60 = 465MB/m / 60 = 7.75MB/s
>> ----------------------------------------------------------------------------- 
>>
>> All of this data and bandwidth above has been shifted off the servers 
>> and onto the downloaders. This saves freebsd and its primary mirrors 
>> money, this is why I chose to download freebsd via bittorrent and why 
>> I'm going keep my bittorrent client open for others.
>
>
> Also, to put this into terms of money, a fractional T3/DS3 line will 
> cost around $7,000/Month.
>
Sorry, I fudged my terms up (MegaByte, Megabit)....  7.75MB/s = 62Mb/s
That means you'd need a OC2 line (104Mb/s) and this is around $27,000/Month.




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