A hybrid Bittorrent and IP
Multicast content distribution
solution
Tiago Andrade e Silva
Motivation Solution Results
Motivation Solution Results
http and www are a
But not fit for file
Without CDN with CDN
Internet Protocol Distribution in 2004
2006 CacheLogic Research
60%
30%
6%
3%
1%
Peer to Peer
Web
Other
FTP
Parkinson’s
law Content expands
to fill the
bandwidth
available for its
distribution
= Bitocast +
Motivation Solution Results
Tracker Torrent
@ 2005 How Stuff Works
Multicast
Unicast
+
Piece Model
Channels: A,B,C,D,E
Scheduler Model
Have Message
Motivation Solution Results
512:256:100 1024:256:100 1024:512:100 2048:512:100
Bittorrent
Bitocast
Successfull downloads
Scheduler Models
Average Finished Nodes
1024 kbps up / 512 Kbpd down
BitTorrent
RAREST
RANDOM
ROUNDROBIN
Piece Models
Average Finished Nodes
1024 kbps up / 512 Kbpd down
BitTorrent
MULTIPLES
INTERVAL
FULL
+
waste In Bitocast some
is produced
Cooperative mode
50% decreased waste
20% increased download time
BC
= Bitocast +
