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RepeatedTiming

RepeatedTiming

RepeatedTiming[expr]

evaluates expr repeatedly and returns a list of the average time in seconds used, together with the result obtained.

RepeatedTiming[expr,t]

does repeated evaluation for at least t seconds.

Details

RepeatedTiming has attribute HoldFirst.
RepeatedTiming[expr;] will give {timing,Null}.
The value of expr returned by RepeatedTiming comes from the first evaluation of expr made by RepeatedTiming.
RepeatedTiming always evaluates expr at least four times. It gives a trimmed mean of the timings obtained, discarding lower and upper quartiles.
RepeatedTiming gives a result whose precision is typically between one and three digits, reflecting both variance in timing results and underlying precision of the operating system clock.
RepeatedTiming measures "wall clock time" and is subject to the same limitations as AbsoluteTiming.
RepeatedTiming[expr] uses a total time that is scaled based on initial measurements of the evaluation time for expr.

Examples

Basic Examples (2)

Time a simple addition:

Time a more complex operation:

Specify that at least one second should be used to time the operation:

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