Open DavisVaughan opened 1 year ago
Due to it calling system.file(), which is typically around half the time of is_installed() or check_installed().
system.file()
is_installed()
check_installed()
Would also be good to look into what the rest of the time is taken up by, but this is a good first step.
library(rlang) bench::mark(check_installed("dplyr")) #> # A tibble: 1 × 6 #> expression min median `itr/sec` mem_alloc `gc/sec` #> <bch:expr> <bch:tm> <bch:tm> <dbl> <bch:byt> <dbl> #> 1 check_installed("dplyr") 760µs 877µs 1119. 8.11MB 10.4 bench::mark(is_installed("dplyr")) #> # A tibble: 1 × 6 #> expression min median `itr/sec` mem_alloc `gc/sec` #> <bch:expr> <bch:tm> <bch:tm> <dbl> <bch:byt> <dbl> #> 1 is_installed("dplyr") 755µs 854µs 1139. 1.95KB 12.6 bench::mark(requireNamespace("dplyr", quietly = TRUE)) #> # A tibble: 1 × 6 #> expression min median itr/s…¹ mem_a…² gc/se…³ #> <bch:expr> <bch> <bch:> <dbl> <bch:b> <dbl> #> 1 requireNamespace("dplyr", quietly = TRUE) 956ns 1.22µs 791422. 0B 0 #> # … with abbreviated variable names ¹`itr/sec`, ²mem_alloc, ³`gc/sec` # Often around half the time bench::mark(system.file(package = "dplyr")) #> # A tibble: 1 × 6 #> expression min median `itr/sec` mem_alloc `gc/sec` #> <bch:expr> <bch:tm> <bch:tm> <dbl> <bch:byt> <dbl> #> 1 system.file(package = "dplyr") 334µs 352µs 2434. 1.95KB 4.06
Created on 2023-03-28 with reprex v2.0.2.9000
Due to it calling
system.file()
, which is typically around half the time ofis_installed()
orcheck_installed()
.Would also be good to look into what the rest of the time is taken up by, but this is a good first step.
Created on 2023-03-28 with reprex v2.0.2.9000