Ayodele Onibokun

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Ayodele Onibokun and Mayur Palankar
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Contents

• What is Amazon S3?
• Why evaluate S3?
• Challenges
• Planet-Lab
• and Trial Error
• Tools
• java, jsh3ll, SCP, SSH, crafted scripts
• cmd-line BitTorrent (python curses and headless)
• OS specifics FC 2,
• Testing Methodologies
• Availability
• Download Time
• BitTorrent Impact on Cost
• Future Directions Conclusions
• Acknowledgements
• Questions

• What Amazon S3 is?
• Why evaluate S3?
• Challenges
• Planet-Lab
• Trial Error
• Testing Methodologies
• Availability
• Download Time
• BitTorrent Impact on Cost
• Future directions Conclusion
• Questions

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Overview of S3

• Simple Storage Service
• ?Unlimited data storage,
• low-latency,
• Reliable,
• Secure, and
• Inexpensive pay-as-you-go

• Why Evaluate S3?
• To Quantify S3 performance claims
• Popularity
• First to do so

• Tools
• Java, jsh3ll, SCP, SSH, crafted scripts
• CMD-line BitTorrent (python curses and headless)
• OS specifics FC 2,

• Challenges
• Limited Budget
• Testing through Planet-Lab
• Trial Errors cost

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Tools Screenshots

• Java and Java Shell (jsh3ll)

Authentication via jsh3ll
cmd-line options
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Tools Screenshots
Listing buckets
Getting an objects
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Tools .. Screenshot contd (BitTorrent)
Amount of data downloaded (KB)
BitTorrent cmd-line download
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Testing Methodologies
Availability Experiment set-up

• ? Availability
• Download Time
• BitTorrent Impact on cost saving

• Hops Traceroute
• Texas 20
• Germany 18
• Japan 19
• Brazil 10

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Download Time (latency)
of geographically dispersed nodes 20 Duration
4 weeks Objective To find the average download
rate for different files. Data Analysis 2 3rd
week
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Availability
of geographically dispersed nodes 5 Duration
4 weeks Objective to verify if data stored on S3
is available 99.9 of the time Data
Analysis Experiment completed for 4 weeks
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Availability
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Availability
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Availability
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BitTorrent
of nodes 48 Status first part completed
(second part in progress) Objective to determine
the reduction in the service cost by the use of
online co-operative peers.
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Conclusions

• Availability very high
• Download time varies a lot
• BitTorrent helps in cost-effective download of
  data

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Acknowledgements

• Appreciation goes to the department of Computer
  Science and Engineering for
• the budget for this experiment. We thank Dr.
  Matei Ripeanu from University
• of British Columbia for his valuable suggestions.