Web Facts and Fantasy

1
Web Facts and Fantasy
Stephen Manley, Network Appliance Margo
Seltzer, Harvard University
presented by Andreas Anagnostatos CSE 291 Feb.
29, 2000
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Server logs
3
Site growth and traffic
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Site Characteristics
5

• Traditional Business
• Peaks indicate periods where the site was
  overhauled

6

• Government Agency
• Users visit more pages on the site

7

• Adult Site
• Search engine ranking determines traffic

8
Effects of CGI
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Persistent Connections
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Limiting the number of open connections

• Time-out and maximum number of connections must
  be well balanced

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• How many persistent connections must be allowed
  per client?
• One connection better network utilization
• ISPs charge for connections
• Latency?

12
Client Latency
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Discussion...

• Site growth correlates with one of six quantities
• Number of users
• Number of documents on site
• Number of documents per user
• Fees to access site
• Search engine ranking
• Web masters efforts
• CGI is NOT becoming increasingly important (?)
• Loaded server are NOT the main cause of latency
  (?)
• Persistent connections improve performance (?)