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Supercharging PlanetLab : a high performance, Multi-Application, Overlay Network Platform

Supercharging PlanetLab : a high performance, Multi-Application, Overlay Network Platform. Written by Jon Turner and 11 fellows. Presented by Benjamin Chervet 8 April 2009. Content :. Context Motivation How to supercharge PlanetLab ? Evaluation Summary.

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Supercharging PlanetLab : a high performance, Multi-Application, Overlay Network Platform

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  1. Supercharging PlanetLab : a high performance, Multi-Application, Overlay Network Platform Written by Jon Turner and 11 fellows. Presented by Benjamin Chervet 8 April 2009

  2. Content : • Context • Motivation • How to supercharge PlanetLab ? • Evaluation • Summary

  3. Context : Overlay Network ? • Computer Network built on Top of another • Examples • P2P Network over the Internet • Dial Up Internet over Telephone Network • PlanetLab over the Internet

  4. Context : PlanetLab • Group of computers over the Internet • Used as a testbed for research and deployment • Shared overlay infrastructures.

  5. Motivations : PlanetLab limitations • Applications run as user-space processes in virtual machines. • Limited throughput • High, unpredictable latency • => What is the solution ?

  6. Supercharging: How works a node right now ?

  7. Objectives of a supercharge nodes • Better IO and processing performances • Not too hard for users to take advantage of the modifications. • Current PlanetLab should run on the new nodes.

  8. Supercharged node

  9. Architecture of a supercharged node Server blade supporting standard PlanetLab environment. Conventional server, coordinates system components and synchronizes with PlanetLab Network processor supporting applications fast-paths Forward the packets to correct PlanetLab environments Blade containing data switch and control switch.

  10. What is a Network processor ? • Use of Network processor technology • A kind of processor specially designed to handle network operations. • Programmable • Typically used in Routers, switchs and firewalls.

  11. Architecture of a NP devices • 16 Multi threaded (Mes) • Fast nearest neighbor connections for pipelined apps. • 3 SDRAM and 4 SRAM channels • Management Processor for control

  12. NP devices • How a NP takes advantages from multi threading ? • Cope with the memory latency gap. • Round robin

  13. System Control Divided in two paths: Pink : Normal Path Blue : Fast Path

  14. Using the fast path • Process 8 packets concurrently. • Fast path shared by slices more efficiently than the old fashion nodes.

  15. GPE improvements • Use better performance hardware • Change the scheduling of applications to improve the latency. • Number of token reduced.

  16. Evaluation of the improvements • Implementation of real world applications. • IPv4 arrive/depart in UDP tunnels. • Internet Indirection Infrastructure (i3)

  17. I3 • Packets contain triggers matched to IP addresses • No match at local node results in Chord forwarding

  18. IPv4 Throughput Comparison

  19. IPv4 Latency Comparison

  20. I3 Latency Comparaison

  21. IPv4/i3 Fast Path throughput comparison

  22. Summary • Supercharged nodes remove the limitations of PlanetLab Nodes • Easy to deploy and adapt to existing structures. • Future work: • Automatic NPE code verification • Flexible NPE implementations

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