Simulator

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Technologie

The Query-Cycle Simulator for Simulating P2P Networks Mario T. Schlosser Tyson E. Condie Sepandar D. Kamvar Stanford University

[object Object],[object Object],[object Object],[object Object],Problem For each peer i { -Repeat until convergence { - Compute . . . - Send . . . } }

Goals ,[object Object],[object Object],[object Object],[object Object],[object Object]

Properties to Model ,[object Object],[object Object],[object Object]

Properties to Model ,[object Object],[object Object],[object Object],[object Object],[object Object]

Data Volume ,[object Object],[object Object],Simulator assigns # of files owned by peer i according to distribution. Saroiu,Gummandi,and Gribble. A Measurement Study of Peer-to-Peer File Sharing Systems, 2002.

Content Type: Observations ,[object Object],[object Object],Crespo and Garcia-Molina. Semantic Overlay Networks, 2002. Korfhage, Information Storage and Retrieval, 1997. Punk Rock Hip-Hop Jazz

Content Type: Model ,[object Object],[object Object],[object Object],[object Object]

Content Type: Model ,[object Object],[object Object],[object Object]

Recap on Content Assignment Assign Data Volume

Recap on Content Assignment {c1, c3, c4} Assign Content Categories

Recap on Content Assignment {c1=.5, c3=.3, c4=.2} Assign Interest Level to Content Categories

Recap on Content Assignment {c1=.5, c3=.3, c4=.2} Assign Files {c,r}={c1,f1} {c,r}={c1,f7} . . .

Network Parameters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Query-Cycle Model ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Query-Cycle Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Query-Cycle Model ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Query-Cycle Model ,[object Object]

Properties to Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Uptime ,[object Object],[object Object],At each query cycle, probability of being up is drawn from distribution in Saroiu et al. Saroiu,Gummandi,and Gribble. A Measurement Study of Peer-to-Peer File Sharing Systems, 2002.

Queries ,[object Object],[object Object],[object Object],[object Object]

Responses and Downloads ,[object Object],[object Object],[object Object],[object Object]

Extensions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Future Work ,[object Object],[object Object],[object Object]

Motivation Network or peer property Affected algorithms ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Query Activity ,[object Object],[object Object],At each query cycle, . . . Saroiu,Gummandi,and Gribble. A Measurement Study of Peer-to-Peer File Sharing Systems, 2002.

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Simulator

1. The Query-Cycle Simulator for Simulating P2P Networks Mario T. Schlosser Tyson E. Condie Sepandar D. Kamvar Stanford University

4. Query Cycle Model Query Cycle 1

5. Query Cycle Model Query Cycle 2

6. Query Cycle Model Query Cycle 3

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13. Recap on Content Assignment

14. Recap on Content Assignment Assign Data Volume

15. Recap on Content Assignment {c1, c3, c4} Assign Content Categories

16. Recap on Content Assignment {c1=.5, c3=.3, c4=.2} Assign Interest Level to Content Categories

17. Recap on Content Assignment {c1=.5, c3=.3, c4=.2} Assign Files {c,r}={c1,f1} {c,r}={c1,f7} . . .

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Simulator

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