Functions to set CPU and/or elapsed time limits for top-level computations or the current session.
setTimeLimit(cpu = Inf, elapsed = Inf, transient = FALSE) setSessionTimeLimit(cpu = Inf, elapsed = Inf)
double (of length one). Set a limit on the total or elapsed cpu time in seconds, respectively.
setTimeLimit sets limits which apply to each top-level
computation, that is a command line (including any continuation lines)
entered at the console or from a file. If it is called from within a
computation the limits apply to the rest of the computation and
transient = TRUE) to subsequent top-level computations.
setSessionTimeLimit sets limits for the rest of the
session. Once a session limit is reached it is reset to
Setting any limit has a small overhead – well under 1% on the systems measured.
Time limits are checked whenever a user interrupt could occur.
This will happen frequently in R code and during
but only at points in compiled C and Fortran code identified by the
‘Total cpu time’ includes that used by child processes where the latter is reported.
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