Computer Science – Networking and Internet Architecture
Scientific paper
2011-03-02
Computer Science
Networking and Internet Architecture
20 pages, 13 figures, 1 table
Scientific paper
Internet applications increasingly employ TCP not as a stream abstraction, but as a substrate for application-level transports, a use that converts TCP's in-order semantics from a convenience blessing to a performance curse. As Internet evolution makes TCP's use as a substrate likely to grow, we offer Minion, an architecture for backward-compatible out-of-order delivery atop TCP and TLS. Small OS API extensions allow applications to manage TCP's send buffer and to receive TCP segments out-of-order. Atop these extensions, Minion builds application-level protocols offering true unordered datagram delivery, within streams preserving strict wire-compatibility with unsecured or TLS-secured TCP connections. Minion's protocols can run on unmodified TCP stacks, but benefit incrementally when either endpoint is upgraded, for a backward-compatible deployment path. Experiments suggest that Minion can noticeably improve the performance of applications such as conferencing, virtual private networking, and web browsing, while incurring minimal CPU or bandwidth costs.
Amin Syed Obaid
Ford Bryan
Iyengar Janardhan
Nowlan Michael F.
Tiwari Nabin
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