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Re: [p2pi] Real life torrent statistics

Victor Semanic <vsemanic@yahoo.com> Mon, 18 August 2008 19:02 UTC

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Date: Mon, 18 Aug 2008 11:55:09 -0700
From: Victor Semanic <vsemanic@yahoo.com>
To: stas@khirman.com
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Subject: Re: [p2pi] Real life torrent statistics
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Dear Dr. Khirman:

You write:
> The dataset includes 19333 unique <ip,port> pairs (some IPs are 
> repeatable) from 1459 ASs.  Or 13.25 peers/AS in average.
> While aggregated by “ISP name”, I got 1368 unique ISP names (not very 
> accurate estimation by second part of AS name) or 14.1 peers per “ISP”

Can you kindly provide some more information on the spread?  That is, what 
was the standard deviation and median for the peers/AS.  I note from your 
original email that the 20 most popular ASs account for about 35% of the 
total ASs.  The last AS listed in your table had 0.9% of the total, so I 
suspect that as the AS list increases there are successively less 
percentage of peers in them.  As such, I will like to put in prespective
the 13.25 peers/AS average in light of the 20 most popular ASes.

Thank you in advance for your time.


      

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