Preliminary Connection Analysis

1
Preliminary Connection Analysis

• ALN Project
• http//www.isi.edu/aln

2
Setup - Server Mode
Internet
www.postel.org

• A live webserver instrumented with Web100
• Relatively small sample Results indicative
• 21K Connections collected over few days
• Ignored all connections except those to or from
  port 80
• Existing unmodified site being served.

3

• Most connections are short and have small MaxCwnd
• Small number of connections have large Cwnds

4

• Most connections are short (mice)
• Most traffic is carried by the long connections
  (elephants)

5
Connections Not Too Short Or Too Long
6
(No Transcript)
7

• Most connections lt 400 ms RTT
• Grouping of RTTs about 10ms (LAN), 80ms

8
(No Transcript)
9
Setup - Client Mode
Internet
Proxy
Clients

• Apache webserver configured as proxy
• Instrumented with Web100
• Relatively larger sample
• 150K Connections
• Ignored all connections except those to or from
  port 80

10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)