In systems that use virtual memory, the resulting condition of a hard drive being used excessively for virtual memory because the physical memory (i.e., RAM) is full. (The process of moving data into and out of virtual memory also is called swapping pages.) Disk thrashing considerably slows down the performance of a system because data has to be transferred back and forth from the hard drive to the physical memory.
A sure sign that your computer is thrashing is when an application stops responding but the disk drive light keeps blinking on and off. Thrashing is generally caused by too many processes competing for scarce memory resources. To temporarily stop thrashing, you need to terminate one or more applications. To stop it permanently, you need to install more main memory.
Disk thrashing can result in permanent failure of the hard drive; as the data is transferred back and forth, the hard drive��s read/write heads are subjected to considerable wear and tear.
(1) In online discussions, a series of messages that have been posted as replies to each other. A single forum or conference typically contains many threads covering different subjects. By reading each message in a thread, one after the other, you can see how the discussion has evolved. You can start a new thread by […]
- thread bump
In online forums and other online discussion spaces bump is the word used to describe an action (e.g. a message post) so that a particular thread is returned to the top in the list of threads. Some users may even post a message with only the word “bump” to indicate they are posting only to […]
- three-chip projector
Projectors employing a three-chip design use a prism to split light from the lamp. Each primary color (red, green and blue) of light is then routed to its own Digital Micromirror Device (DMD) chip. The colors are recombined and routed out through the lens. Contrast with single-chip projector which uses a single DMD.
- three-click rule
In Web site design, the three-click rule is a non-standard measurement for usability. The three-click (or 3-click) rule notes that no product or piece of content should ever be more than three clicks away from your Web site’s main page. The three-click rule was made popular by Web designer Jeffrey Zeldman in his book, “Taking […]
- three-dimensional spreadsheet
A spreadsheet program that allows you to arrange data as a stack of tables, each of which has the same shape and size. You can analyze a single table or an entire group of tables.