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The Outstanding Success of P2P 1.0
• 44% of all Global Internet traffic – in some countries up to 80%
• Used for file sharing (Bittorrent), VoIP (Skype) and lookup services
• Mostly focused on the need of the end users
P2P; 44%
Video; 32%
E-mail, web; 19%
Other; 5%
Global Internet Traffic 2008
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The Problems of P2P 1.0
• Random or unstructured traffic patterns – plaguing ISPs and lowering overall performance
• Low or no QoS• Poor peer resource efficiency
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Guiding P2P 2.0 Design Principles
How can we address these issues with P2P 2.0?
• Care about the whole business ecosystem: distributer/sharers, ISPs and end users
• Network Topology Aware – keep traffic local!• Efficient Peer Resource Management – semi
global or global optimizations vs old heuristic rules
• Predictable QoS
P2P 2.0 enables efficient high bandwidth services such as Video Streaming, Storage/backup and Cloud like services
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P2P 2.0 example 1:
Video Streaming
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P2P Live Video Streaming
Characteristics:• Consumes very little bandwidth (80-98% less)• Network Topology Aware• Scales almost infinitely
P2P Tracker
P2P Optimizer
NAT helper
Video Source
P2P Source
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P2P 2.0 example 2:
The New Pirate Bay
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Pirate Bay’s Tracker Today
• TPB’s Open Tracker v1.0 manages ~15% of global Internet traffic
• Is written by Dirk Engling and uses Bram Cohen’s vanilla Bittorrent protocol
• Tracks around 2 million torrents and 25 millions users at any given time
• Creates huge amounts of redundant traffic due to random peer pairing
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Open Tracker 2.0
• We improve Open Tracker by adding network awareness
• We use a global network map to keep traffic local
• We allow ISPs to put costs on each link and we optimize accordingly
• We see 20-50% less traffic loads and 30-150% higher download speeds
• Requires no Bittorrent client changes• Will be launched as free open source in
September
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P2P 1.0: Topology oblivious P2P (standard Bittorrent etc)
Network operator 1
Network operator 2
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P2P 2.0: Locality aware P2P
Network operator 1
Network operator 2
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Global Network Map(with links and their quality)
Locality, locality, locality- Get the data from your neighbor, not from the other side of the globe
BGP data
Proprietary Data
Peer data
Peerialism’s
locality algorithm
Open Tracker 2.0
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Test ResultsFinding the sweet spot
% redudant BT Trafficdownload time
% redudant BT Traffic download time
SWEET
12000 standard clients,Open Tracker 2.0
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Conclusions
• P2P has matured into 2.0 and is ready to delivery efficient services with QoS guarantees
• P2P 2.0 cares about the whole business ecosystem
• Huge traffic and performance improvements can be achieved compared to P2P 1.0
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Andreas Dahlströ[email protected]