build_times: See the time it took to build each target.

Description

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)
)

Value

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

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.

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.

Examples

Run this code

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.
}
}
})
}