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Background: Know: throttling Recognize:

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Presenting results of performance monitoringEdit

Several tools exist for visualising network performance, e.g. Multi Router Traffic Grapher (MRTG) http://oss.oetiker.ch/mrtg/

The Multi Router Traffic Grapher is the free software for monitoring and measuring the traffic load on network links, which allows the user to see traffic load on a network over time in graphical form.

Multi Router Traffic Grapher wasdeveloped by




Tobias Oetiker to monitor router traffic, but has developed into a tool that can create graphs and statistics for almost anything.

Loss of service:

Ifa loss of traffic for some reason occurs for a few hours, it may look like this:

This particular server experienced about a 20min loss of traffic around 10:30am.

Periodic spikes may indicate regular backups:

Spikes occur everyday, which indicates that spikes can be caused by daily backups.

Capped demand may indicate constraint on supply, e.g. throttling:

Throttling is a process to regulate the rate where application processing is conducted, either statically or dynamically. Here, Throttling is used to limit the maximum throughput of the network.

A flat top to the outgoing bandwidth like above shows the network site was slow and /or non responsive to users at that time. This situation suggests bandwidth capping or throttles.

==See also==

graph of use over time from accounting lecture


Reference

http://en.wikipedia.org/wiki/Multi_Router_Traffic_Grapher

Tobias Oetiker, 2012, accessed 5 October 2012, http://oss.oetiker.ch/mrtg/index.en.html.