Comments on: what type of traffic uses up broadband bandwidth http://www.trefor.net/2009/09/10/what-type-of-traffic-uses-up-broadband-bandwidth/ Insider comments from the world of communications Thu, 09 Feb 2012 18:50:23 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: tref http://www.trefor.net/2009/09/10/what-type-of-traffic-uses-up-broadband-bandwidth/comment-page-1/#comment-832 tref Thu, 10 Sep 2009 10:33:40 +0000 http://staging.trefor.net/?p=1454#comment-832 Thanks James. Very interesting paper - remind me to test you on the maths sometime :-) Thanks James. Very interesting paper – remind me to test you on the maths sometime :-)

]]> By: James Blessing http://www.trefor.net/2009/09/10/what-type-of-traffic-uses-up-broadband-bandwidth/comment-page-1/#comment-831 James Blessing Thu, 10 Sep 2009 09:59:52 +0000 http://staging.trefor.net/?p=1454#comment-831 p2p isn't efficient at the transfer of data as there is a substantial overhead incurred due to the number of chunks a file has to be split into to make distribution efficient. This results in each node in the p2p network transfering between 5% and 45% additional data compared to a simple single download. What p2p is efficient is the distribution of content at lowest cost for the content source (depending on the type of p2p protocol chosen) as once the seeding of the p2p network is completed the original source can be taken off-line (although the number of nodes in the network needs to stay at a relatively high number to make sure the content is available) For those interested in the maths, this makes a good place to start: http://www.eurecom.fr/~btroup/BPublished/QofIS_scalingpaper.pdf p2p isn’t efficient at the transfer of data as there is a substantial overhead incurred due to the number of chunks a file has to be split into to make distribution efficient. This results in each node in the p2p network transfering between 5% and 45% additional data compared to a simple single download.

What p2p is efficient is the distribution of content at lowest cost for the content source (depending on the type of p2p protocol chosen) as once the seeding of the p2p network is completed the original source can be taken off-line (although the number of nodes in the network needs to stay at a relatively high number to make sure the content is available)

For those interested in the maths, this makes a good place to start:
http://www.eurecom.fr/~btroup/BPublished/QofIS_scalingpaper.pdf

]]>