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Timeout (computing)

In telecommunications and related engineering (including computer networking and programming), the term timeout or time-out has several meanings, including:

  • A network parameter related to an enforced event designed to occur at the conclusion of a predetermined elapsed time.
  • A specified period of time that will be allowed to elapse in a system before a specified event is to take place, unless another specified event occurs first; in either case, the period is terminated when either event takes place. Note: A timeout condition can be canceled by the receipt of an appropriate time-out cancellation signal.
  • An event that occurs at the end of a predetermined period of time that began at the occurrence of another specified event. The timeout can be prevented by an appropriate signal.
Network timeout preventing a Web browser from loading a page

Timeouts allow for more efficient usage of limited resources without requiring additional interaction from the agent interested in the goods that cause the consumption of these resources. The basic idea is that in situations where a system must wait for something to happen, rather than waiting indefinitely, the waiting will be aborted after the timeout period has elapsed. This is based on the assumption that further waiting is useless, and some other action is necessary.

Examples edit

timeout
 
The timeout command on Microsoft Windows
Developer(s)Microsoft, ReactOS Contributors
Operating systemWindows, ReactOS
TypeCommand
LicenseWindows: Proprietary commercial software
ReactOS: GNU General Public License
Websitedocs.microsoft.com/en-us/windows-server/administration/windows-commands/timeout_1

Specific examples include:

  • In the Microsoft Windows and ReactOS[1] command-line interfaces, the timeout command pauses the command processor for the specified number of seconds.[2][3]
  • In POP connections, the server will usually close a client connection after a certain period of inactivity (the timeout period). This ensures that connections do not persist forever, if the client crashes or the network goes down. Open connections consume resources, and may prevent other clients from accessing the same mailbox.
  • In HTTP persistent connections, the web server saves opened connections (which consume CPU time and memory). The web client does not have to send an "end of requests series" signal. Connections are closed (timed out) after five minutes of inactivity; this ensures that the connections do not persist indefinitely.
  • In a timed light switch, both energy and lamp's life-span are saved. The user does not have to switch off manually.
  • Tablet computers and smartphones commonly turn off their backlight after a certain time without user input.

See also edit

References edit

  1. ^ "timeout.c". July 13, 2019 – via GitHub.
  2. ^ "timeout". docs.microsoft.com.
  3. ^ "TIMEOUT.exe (Windows 7/2008 or later)". ss64.com.

Further reading edit

timeout, computing, this, article, includes, list, references, related, reading, external, links, sources, remain, unclear, because, lacks, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, january, 2019, learn, wh. This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help improve this article by introducing more precise citations January 2019 Learn how and when to remove this message In telecommunications and related engineering including computer networking and programming the term timeout or time out has several meanings including A network parameter related to an enforced event designed to occur at the conclusion of a predetermined elapsed time A specified period of time that will be allowed to elapse in a system before a specified event is to take place unless another specified event occurs first in either case the period is terminated when either event takes place Note A timeout condition can be canceled by the receipt of an appropriate time out cancellation signal An event that occurs at the end of a predetermined period of time that began at the occurrence of another specified event The timeout can be prevented by an appropriate signal Network timeout preventing a Web browser from loading a page Timeouts allow for more efficient usage of limited resources without requiring additional interaction from the agent interested in the goods that cause the consumption of these resources The basic idea is that in situations where a system must wait for something to happen rather than waiting indefinitely the waiting will be aborted after the timeout period has elapsed This is based on the assumption that further waiting is useless and some other action is necessary Contents 1 Examples 2 See also 3 References 4 Further readingExamples edittimeout nbsp The timeout command on Microsoft WindowsDeveloper s Microsoft ReactOS ContributorsOperating systemWindows ReactOSTypeCommandLicenseWindows Proprietary commercial software ReactOS GNU General Public LicenseWebsitedocs wbr microsoft wbr com wbr en us wbr windows server wbr administration wbr windows commands wbr timeout wbr 1 Specific examples include In the Microsoft Windows and ReactOS 1 command line interfaces the timeout command pauses the command processor for the specified number of seconds 2 3 In POP connections the server will usually close a client connection after a certain period of inactivity the timeout period This ensures that connections do not persist forever if the client crashes or the network goes down Open connections consume resources and may prevent other clients from accessing the same mailbox In HTTP persistent connections the web server saves opened connections which consume CPU time and memory The web client does not have to send an end of requests series signal Connections are closed timed out after five minutes of inactivity this ensures that the connections do not persist indefinitely In a timed light switch both energy and lamp s life span are saved The user does not have to switch off manually Tablet computers and smartphones commonly turn off their backlight after a certain time without user input See also edit nbsp Wikibooks has a book on the topic of Guide to Windows Commands Fibre Channel time out values Human Machine Interaction Permanent signalReferences edit timeout c July 13 2019 via GitHub timeout docs microsoft com TIMEOUT exe Windows 7 2008 or later ss64 com nbsp This article incorporates public domain material from Federal Standard 1037C General Services Administration Archived from the original on 2022 01 22 in support of MIL STD 188 Further reading editJohn Paul Mueller 2007 Windows Administration at the Command Line for Windows Vista Windows 2003 Windows XP and Windows 2000 John Wiley amp Sons ISBN 978 0470165799 Retrieved from https en wikipedia org w index php title Timeout computing amp oldid 1134779122, wikipedia, wiki, book, books, library,

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