A Measurement Study of Cache Rejection in P2P Live Streaming System

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Yishuai Chen

Tecnologia Negócios

Index ,[object Object],[object Object],[object Object],[object Object]

Limited Cache Size ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sliding Window ,[object Object],[object Object]

Example ,[object Object],[object Object],1111111111111…………1111111111 001011011 1111111111111…………1111111111 001011011 1111111111111 0000000000001 Get a new chunk Reject the same amount of chunks No, We are downloading!

Rate Changes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Measurement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Rs vs. Ro(One Peer) Rate Change Tracking (PLL) Latency

Peers Change Ro at Different Time ,[object Object]

Rs also Change at the Same Chunk! ,[object Object]

Behavior & Meaning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Modeling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Virtual Buffer Abstract ,[object Object],[object Object],[object Object],[object Object],[object Object]

Numerical Result Rate change chunk offset: 104923 94901 55382 53509 33106 24206 Max 104890 94879 55372 53474 33086 24193 Min 33 22 10 35 20 13 Max-Min 104909 94895 55377 53498 33097 24200 Mean 12.59 7.17 4.84 11.14 7.20 4.93 Std. Dev 6 5 4 3 2 1 Interval

Comparison: Ro and Rs Change Change Chunk Offset Difference -126 56 186 -42 -72 3 Difference 6 5 4 3 2 1 Interval

Lack of Explicit Result ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Performance ,[object Object],[object Object],[object Object],[object Object]

Reference ,[object Object],[object Object]

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