Computer Science – Networking and Internet Architecture
Scientific paper
2010-06-15
Computer Science
Networking and Internet Architecture
submitted
Scientific paper
Last year, the official BitTorrent client switched to LEDBAT, a new congestion control algorithm targeting a lower-than Best Effort transport service. In this paper, we study this new protocol through packet-level simulations, with a special focus on a performance comparison with other lower-than Best Effort protocols such as TCP-LP and TCP-NICE: our aim is indeed to quantify and relatively weight the level of Low-priority provided by such protocols. Our results show that LEDBAT transport generally achieves the lowest possible level of priority, with the default configurations of TCP-NICE and TCP-LP representing increasing levels of aggressiveness. In addition, we perform a careful sensitivity analysis of LEDBAT performance, by tuning its main parameters in both inter-protocol (against TCP) and intra-protocol (against LEDBAT itself) scenarios. In the inter-protocol case, although in case of misconfiguration LEDBAT competes as aggressively as TCP, however we show that it is not possible to achieve an arbitrary level of low-priority by merely tuning its parameters. In the intra-protocol case, we show that coexistence of legacy flows with slightly dissimilar settings, or experiencing different network conditions, can result in significant unfairness.
Carofiglio Giovanna
Muscariello Luca
Rossi Dario
Testa Claudio
No associations
LandOfFree
A hands-on Assessment of Transport Protocols with Lower than Best Effort Priority does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A hands-on Assessment of Transport Protocols with Lower than Best Effort Priority, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A hands-on Assessment of Transport Protocols with Lower than Best Effort Priority will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-105267