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Succinctly stated, '''wall clock time''' is the human perception of the passage of time from the start to the completion of a task. In the context of a task being performed on a [[computer]], '''wall clock time''' or '''wall time''' is a measure of how much real [[time]] that elapses from start to end, including time that passes due to [[sleep (operating system)|programmed (artificial) delays]] or waiting for resources to become available. |
Succinctly stated, '''wall clock time''' is the human perception of the passage of time from the start to the completion of a task. In the context of a task being performed on a [[computer]], '''wall clock time''' or '''wall time''' is a measure of how much real [[time]] that elapses from start to end, including time that passes due to [[sleep (operating system)|programmed (artificial) delays]] or waiting for resources to become available. |
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In the context of [[time zone]] calculations, ''' |
In the context of [[time zone]] calculations, '''wall clock time''' identifies the local time with any applicable adjustments for [[daylight saving time]]. It provides a way to refer to a time without specifying standard time or daylight saving time. |
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In [[Computer architecture|Computer architecture and organization]] ,'''Wall Clock Time''' is related to three terms:<br /> |
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CPU time<br /> |
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IO time <br /> |
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Communication channel delay(if data were scattered on multiple machines)<br /> |
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''WCT = CPU time + IO time + Communication delay'' |
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==See also== |
==See also== |
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*[[System time]] |
*[[System time]] |
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Revision as of 21:54, 2 December 2007
Succinctly stated, wall clock time is the human perception of the passage of time from the start to the completion of a task. In the context of a task being performed on a computer, wall clock time or wall time is a measure of how much real time that elapses from start to end, including time that passes due to programmed (artificial) delays or waiting for resources to become available.
In the context of time zone calculations, wall clock time identifies the local time with any applicable adjustments for daylight saving time. It provides a way to refer to a time without specifying standard time or daylight saving time.
See also
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