Skip to content Skip to navigation

OpenStax_CNX

You are here: Home » Content » What causes Long-Tail traffic?

Navigation

Recently Viewed

This feature requires Javascript to be enabled.
 

What causes Long-Tail traffic?

Module by: Arnold Mwesigye. E-mail the author

If the distribution of file sizes is heavy-tailed then the superposition of many file transfers in a client/server network environment will be long-range dependent. This remains the case even when there are changes in network resources like bandwidth, buffer capacity and also in network topology. (Wikipedia)

It can be shown that long-range dependence could arise in the queue length dynamics at a given node (an entity which transfers traffic) within a communications network even when the traffic sources are free of long-range dependence. The mechanism for this is believed to relate to feedback from routing effects in the simulation. (Wikipedia)

For example:

In the heavy-tailed distribution of file sizes observed, the decision on whether a small file or a large file is sent is simply a feature of the human requirement to send a file of that size at that time.

Exercise:

Give possible suggestions of any other scenarios that can be modelled by the heavy-tailed distribution? Answer

References:

Wikipedia. "Long-tail traffic", Wikimedia Foundation Inc, http://en.wikipedia.org/wiki/Long-tail_traffic, Last accessed 11 February 2006.

Self-Similarity in World Wide Web Traffic: Evidence and Possible Causes Mark E. Crovella, Member, IEEE, and Azer Bestavros, Member, IEEE.

Arnold Mwesigye

Content actions

Download module as:

Add module to:

My Favorites (?)

'My Favorites' is a special kind of lens which you can use to bookmark modules and collections. 'My Favorites' can only be seen by you, and collections saved in 'My Favorites' can remember the last module you were on. You need an account to use 'My Favorites'.

| A lens I own (?)

Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

| External bookmarks