TCP IN A WORLD OF CLOUD SERVICES Jiang Zhu Stanford University In - - PowerPoint PPT Presentation

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tcp in a world of cloud services

TCP IN A WORLD OF CLOUD SERVICES Jiang Zhu Stanford University In - - PowerPoint PPT Presentation

Aug 22, 2022 173 likes •417 views

TCP IN A WORLD OF CLOUD SERVICES Jiang Zhu Stanford University In collaboration with: Nandita Dukkipati, Sateesh Addepalli, Flavio Bonomi Cisco Systems CLOUD SERVICES WHAT IS THE DEMO ABOUT? Long wait times in accessing the cloud TCP

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TCP IN A WORLD OF CLOUD SERVICES

Jiang Zhu Stanford University In collaboration with: Nandita Dukkipati, Sateesh Addepalli, Flavio Bonomi Cisco Systems

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CLOUD SERVICES

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WHAT IS THE DEMO ABOUT?

Long wait times in accessing the cloud TCP inefficiencies: RTTs losses load

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DEMO MOTIVATION: PAINFULLY LONG UPLOAD TIMES

Proliferating user generated content Uploads take a long time End user wants: Share the content at the soonest possible

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DEMO SET UP: LOGICAL TOPOLOGY

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution Other users: Cross Traffic The Data Center Cloud Access Link DC Link

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DEMO SCENARIO I: UPLOADS ON HIGH BDP LOSSY LINKS

100 ms RTT between user and server; 0.1% packet loss Access Link is 45Mbps; DC Link is GE; No cross-traffic

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution Other users: Cross Traffic The Data Center Cloud Access Link DC Link

Bottleneck

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File Video File

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THE PSEUDO-IDEAL SOLUTION

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution The Data Center Cloud Access Link DC Link

Video File Video File

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TCP Performance Upload to the Server. Average: 5.31 Mbps Upload to the Service Node. Average: 30 Mbps

200 400 600 800 1000 10 20 30 40 Time [sec.] Throughput [Mbps] 200 400 600 800 1000 10 20 30 40 Time [sec.] Throughput [Mbps]

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THE DEMO: SCENARIO 1I

100 ms RTT between user and server; No packet loss Access Link is 45Mbps; DC Link is 45Mbps; Heavy cross-traffic

User 1: Uploading Video User 2: Viewing Video Part of “Oracle” Solution Other users: Cross Traffic The Data Center Cloud Access Link DC Link

bottleneck

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TCP Performance DC link average: 39 Mbps; User 1: 4.39 Mbps Upload to the Service Node. Average: 43.3 Mbps

200 400 600 800 1000 10 20 30 40 Time [sec.] Throughput [Mbps] 200 400 600 800 1000 10 20 30 40 Time [sec.] Throughput [Mbps]

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EXAMPLE OF OTHER SCENARIOS: UPLOADING TO MULTIPLE SITES

User 1: Uploading Pictures User 2: Viewing Pictures Flickr

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CONCLUSION

TCP in a world of cloud computing will not be a train wreck in the sense that things come to a grinding halt But... It will be agonizingly slow in common scenarios Lost opportunities in not exploring alternatives?