See the time it took to build each target.

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

Usage

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) { # \dontrun{
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.
}
}
})
} # }