Time - Wall Clock

> (Data|State) Management and Processing > (Data Type|Data Structure) > Time > Time - (Duration|Elapsed Time)

1 - About

Wall-clock time, or wall time, is the human perception of the passage of time from the start to the completion of a task.

Wall-clock time is the time that a clock on the wall (or a stopwatch in hand) would measure as having elapsed between the start of the process and “now”.


  • elapsed real time
  • real time
  • elapsed time

same as Time - (Duration|Elapsed Time) ?


3 - Computer

In the context of a task being performed on a computer, wall-clock time is a measure of the real time that elapses from start to end, including:

  • time that passes due to programmed (artificial) delays
  • or waiting for resources to become available.

Wall-clock_time is is the difference between the time at which a task finishes and the time at which the task started.

4 - Documentation / Reference