[72512] in North American Network Operators' Group
Re: Regional differences in P2P
daemon@ATHENA.MIT.EDU (Marshall Eubanks)
Thu Jul 15 09:33:54 2004
In-Reply-To: <Pine.LNX.4.44.0407151052410.14480-100000@uplift.swm.pp.se>
Cc: nanog@merit.edu
From: Marshall Eubanks <tme@multicasttech.com>
Date: Thu, 15 Jul 2004 09:30:03 -0400
To: Mikael Abrahamsson <swmike@swm.pp.se>
Errors-To: owner-nanog-outgoing@merit.edu
On Jul 15, 2004, at 5:25 AM, Mikael Abrahamsson wrote:
>
> On Thu, 15 Jul 2004, Sean Donelan wrote:
>
>> Apparently CacheLogic based most of their conclusions on data
>> collected
>> from a European "tier 1" ISP. However, another study by Sandvine
>> found
>> regional differences in file sharing networks. Europe and the US
>> don't
>> have the same file sharing patterns, or even popular file sharing
>> programs.
>
> I would also like to add that over here Direct Connect is quite common
> among the more organized and hard-core file swappers, while the
> really-hardcore guys of course are still using private ftp servers.
>
> With proliferation of 10 meg ethernet (full duplex) connections for
> residential use in (especially) northern europe and in asia, users are
> more likely to serve content to other users around the world.
>
> I have made some studies regarding the bandwidth usage pattern between
> equal size populations where the difference is if they have ADSL
> 8M/800k
> or if they have 10M/10M. The amount of data served is 1/3rd on ADSL
> compared to the symmetric ethernet population, and as a population they
> serve out more content than they download (approx twice the amount) on
> ethernet. The ADSL population peak at approx twice the bw as they
> serve,
> but on average they serve a little less than they download.
>
> Hmm, the above wasn't very clear, but here it goes in another format:
>
> Ethernet:
>
> Peak almost twice upload as download.
> Average is 2.5-3 times more upload than download.
>
> ADSL 8M/800k:
>
> Peak twice the amount download as upload
> Average is 1.3-1.5 more download than upload
> Upload bw usage is almost flat over time
> Download bw peak is approx double the average level.
>
> My interpretation of this is that p2p networks are quite intelligent in
> using the available bandwidth, and that Copyright holders only
> solution is
> a "content crunch" due to providers limiting their users upload
> potential
> due to heavy usage, such as capping the amount of bandwidth allowed per
> month or alike.
>
Let's hope that their users don't try to do things like
videoconferencing from home. (Like I do.)
> --
> Mikael Abrahamsson email: swmike@swm.pp.se
>
>
Regards
Marshall Eubanks
T.M. Eubanks
e-mail : marshall.eubanks@telesuite.com
http://www.telesuite.com