Set CPU and/or Elapsed Time Limits
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)
- cpu, elapsed
- double (of length one). Set a limit on the total or elapsed cpu time in seconds, respectively.
- logical. If
TRUE, the limits apply only to the rest of the current computation.
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.