See the time it took to build each target.

Applies to targets in your plan, not imports or files.

build_times(
  ...,
  path = NULL,
  search = NULL,
  digits = 3,
  cache = drake::drake_cache(path = path),
  targets_only = NULL,
  verbose = NULL,
  jobs = 1,
  type = c("build", "command"),
  list = character(0)
)

Arguments

...	Targets to load from the cache: as names (symbols) or character strings. If the tidyselect package is installed, you can also supply dplyr-style tidyselect commands such as starts_with(), ends_with(), and one_of().
path	Path to a drake cache (usually a hidden .drake/ folder) or NULL.
search	Deprecated.
digits	How many digits to round the times to.
cache	drake cache. See new_cache(). If supplied, path is ignored.
targets_only	Deprecated.
verbose	Deprecated on 2019-09-11.
jobs	Number of jobs/workers for parallel processing.
type	Type of time you want: either "build" for the full build time including the time it took to store the target, or "command" for the time it took just to run the command.
list	Character vector of targets to select.

Value

A data frame of times, each from system.time().

Details

Times for dynamic targets (https://books.ropensci.org/drake/dynamic.html) only reflect the time it takes to post-process the sub-targets (typically very fast) and exclude the time it takes to build the sub-targets themselves. Sub-targets build times are listed individually.

See also

predict_runtime()

Examples

if (FALSE) {
isolate_example("Quarantine side effects.", {
if (suppressWarnings(require("knitr"))) {
if (requireNamespace("lubridate")) {
# Show the build times for the mtcars example.
load_mtcars_example() # Get the code with drake_example("mtcars").
make(my_plan) # Build all the targets.
print(build_times()) # Show how long it took to build each target.
}
}
})
}