Definition

Wirth's Law

Wirth's Law states that computer software increases in complexity faster than does the ability of available hardware to run it. Another way of stating this is "Software slows down faster than hardware speeds up." This annoying phenomenon results in part from software bloat, the tendency for applications to evolve new features that place ever-increasing demands on computer resources. Wirth's Law is attributed to the Swiss computer scientist Niklaus Wirth, who wrote a paper lamenting software bloat in 1995.

The problem defined by Wirth's Law is not entirely caused by bloated applications. If the operating system on a PC is too advanced for the available memory and processing speed, that computer may run slowly. This can occur, for example, if Windows Vista is installed on an old computer designed for Windows 98. Poor system performance can result from the presence of viruses, Trojans, spyware or severe fragmentation of data stored on the hard disk. A system can also be slowed if the user tries to run too many applications at once, allows too many programs to load at startup or runs a "heavy-handed" system security utility.

Slow computer performance on the Internet can occur because of limited data transfer rate. A dial-up connection is no longer adequate for many Web-based applications. Even a high-speed connection may function slowly if too many users attempt to access a local Internet service provider (ISP) or if a significant number of users are engaged in bandwidth-intensive activities.

This was last updated in March 2007
Posted by: Margaret Rouse

Email Alerts

Register now to receive SearchSoftwareQuality.com-related news, tips and more, delivered to your inbox.
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

More News and Tutorials

Do you have something to add to this definition? Let us know.

Send your comments to techterms@whatis.com

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: