Please Whitelist This Site?

I know everyone hates ads. But please understand that I am providing premium content for free that takes hundreds of hours of time to research and write. I don't want to go to a pay-only model like some sites, but when more and more people block ads, I end up working for free. And I have a family to support, just like you. :)

If you like The TCP/IP Guide, please consider the download version. It's priced very economically and you can read all of it in a convenient format without ads.

If you want to use this site for free, I'd be grateful if you could add the site to the whitelist for Adblock. To do so, just open the Adblock menu and select "Disable on tcpipguide.com". Or go to the Tools menu and select "Adblock Plus Preferences...". Then click "Add Filter..." at the bottom, and add this string: "@@||tcpipguide.com^$document". Then just click OK.

Thanks for your understanding!

Sincerely, Charles Kozierok
Author and Publisher, The TCP/IP Guide


NOTE: Using software to mass-download the site degrades the server and is prohibited.
If you want to read The TCP/IP Guide offline, please consider licensing it. Thank you.

The Book is Here... and Now On Sale!

The whole site in one document for easy reference!
The TCP/IP Guide

Custom Search







Table Of Contents  The TCP/IP Guide
 9  Networking Fundamentals

Previous Topic/Section
The Internet, Intranets and Extranets
Previous Page
Pages in Current Topic/Section
1
Next Page
Putting Network Performance In Perspective
Next Topic/Section

Network Performance Issues and Concepts

Networking is largely about connecting together devices so that information can be shared between them. Since the idea is to send data from one place to another, a very important characteristic of any network is its speed: how fast can data be transmitted and received? This matter of speed turns out to be only one of several issues that determine the overall performance of a network. The issue is complex enough that I decided a section was warranted to introduce the various related topics and help you understand how to look at network performance in a balanced way. When it comes to network performance, there's a lot of hype out there!

In the computing world, performance is, in general, one of the most often discussed but least well-understood characteristics of any system or hardware device. This is true of networking as well. For example, most people know the raw throughput rating of their network hardware, and may even start to draw conclusions about its capabilities based on those numbers. Many, however, don't realize that they will never actually achieve that “rated” amount of performance in the real world.

Most of the other “subtle” issues related to performance are also typically ignored or misunderstood, such as the impact of software drivers on hardware performance, and the fact that certain applications need more than just raw bit speed—they need reliable delivery of data. But even beyond all of this, one of the most important issues related to network performance is understanding what your needs are, to make sure you don't spend too much money for performance you don't need—or worse, create a network that can't meet your requirements.

In this section, I discuss various performance issues and concepts that are related to networking in one way or another. First and foremost, I try to put performance in context, and also contrast it with non-performance issues. Then, I talk about several key performance terms and metrics: speed, bandwidth, throughput and latency. I also talk about some of the units used to measure network performance. I then explain how the real-world performance of a network differs from its theoretical performance, and talk about factors that have an impact on network performance. I conclude by contrasting full-duplex and half-duplex network operation, and talking about quality of service, a concept that is especially important in the use of networks for real-time applications such as streaming multimedia.

Quick navigation to subsections and regular topics in this section



Previous Topic/Section
The Internet, Intranets and Extranets
Previous Page
Pages in Current Topic/Section
1
Next Page
Putting Network Performance In Perspective
Next Topic/Section

If you find The TCP/IP Guide useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider purchasing a download license of The TCP/IP Guide. Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $



Home - Table Of Contents - Contact Us

The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005

Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.