Wall Time: N. (also `wall Clock Time') 1. `Real World' Time (what The Clock On The Wall Shows), As Opposed To The System Clock's Idea Of Time.

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:wall time: n. (also `wall clock time') 1. `Real world' time (what
the clock on the wall shows), as opposed to the system clock's idea
of time. 2. The real running time of a program, as opposed to the
number of {tick}s required to execute it (on a timesharing
system these always differ, as no one program gets all the
ticks, and on multiprocessor systems with good thread support
one may get more processor time than real time).
-- The AI Hackers Dictionary

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