As part of a broader organisational restructure, data networking research at Swinburne University of Technology has moved from the Centre for Advanced Internet Architecture (CAIA) to the Internet For Things (I4T) Research Lab.

Although CAIA no longer exists, this website reflects CAIA's activities and outputs between March 2002 and February 2017, and is being maintained as a service to the broader data networking research community.


Set B 1msec Packet Inter-Arrival Time


The following section shows the difference between automatically allowing the interface to detect the line speed and explicitly setting the line speed of an interface for 1msec packet inter-arrival time.

Explicitly setting the line speed to 10Mbit/sec resulted in the time stamps of the packets being surpisingly less accurate than allowing them to be automatically detected. We can see in Figure 15 that two outliers further out than those in Figure 14 have caused this. The time stamps did, however, improve when the line speed was explicitly set in the 100Mbit/sec tests, although outliers still occured.

Figure 14: Automatic 10Mbit/sec
Figure 15: Explicit 10Mbit/sec
Figure 16: Automatic 100Mbit/sec
Figure 17: Explicit 100Mbit/sec

We can see from Tables 13 to 16, the the slight improvement in variance and standard deviation when the line speed was explicitly set only occured for the 10Mbit/sec test. Outliers were still present, however, in all tests.

Table 13: Automatic 10Mbit/sec (usec)

Mean
Variance
Standard Deviation
1083.294
1.318
1.148

Table 14: Explicit 10Mbit/sec (usec)

Mean
Variance
Standard Deviation
1083.294
1.321
1.149

Table 15: Automatic 100Mbit/sec (usec)

Mean
Variance
Standard Deviation
1008.408
1.811
1.346

Table 16: Explicit 100Mbit/sec (usec)

Mean
Variance
Standard Deviation
1008.408
1.264
1.124





Swinburne Homepage Site Map Search Index
 

Swinburne Copyright and disclaimer Privacy Feedback

Last Updated: Thursday 13-May-2004 09:54:30 AEST
URL:
Maintained by: Ana Pavlicic apavlicic@groupwise.swin.edu.au
Authorised by: Grenville Armitage garmitage@swin.edu.au

IndexSearchSite MapSwinburne Home Page