AbsoluteTiming
AbsoluteTiming[expr]
evaluates expr, returning a list of the absolute number of seconds in real time that have elapsed, together with the result obtained.
Details
- AbsoluteTiming has attribute HoldAll.
- AbsoluteTiming[expr;] will give {timing,Null}.
- AbsoluteTiming is always accurate down to a granularity of $TimeUnit seconds, but on many systems is much more accurate.
- AbsoluteTiming[expr] measures only the time involved in actually evaluating expr, not time involved in formatting the result.
Examples
open all close allBasic Examples (2)
Get the total time to do a computation:
AbsoluteTiming[x = 1 + 2; Pause[x];x + 3]Timing just reports CPU time used:
Timing[x = 1 + 2; Pause[x];x + 3]AbsoluteTiming takes into account all time, including getting data over the internet if needed:
AbsoluteTiming[CountryData["France", "Population"]]The second time it is run is faster since the data has been saved for immediate reuse:
AbsoluteTiming[CountryData["France", "Population"]]Properties & Relations (1)
AbsoluteTiming has the attribute SequenceHold:
AbsoluteTiming[Sequence[10!, 40!]]
An Elementary Introduction to the Wolfram LanguageText
Wolfram Research (2003), AbsoluteTiming, Wolfram Language function, https://reference.wolfram.com/language/ref/AbsoluteTiming.html.
CMS
Wolfram Language. 2003. "AbsoluteTiming." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/AbsoluteTiming.html.
APA
Wolfram Language. (2003). AbsoluteTiming. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/AbsoluteTiming.html