Running Time of R

Usage

proc.time()

Description

proc.time determines how much time (in seconds) the currently running R process already consumed.

Value

A numeric vector of length 5, containing the user, system, and total elapsed times for the currently running R process, and the cumulative sum of user and system times of any child processes spawned by it.

It is most useful for ``timing'' the evaluation of R expressions, which can be done conveniently with system.time.

See Also

system.time for timing a valid R expression

Examples

ptm <- proc.time()
for (i in 1:50) mad(runif(500))
proc.time() - ptm

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