`furrr` much slower than `purrr` (on Windows) about furrr HOT 2 CLOSED

Hi @alex-lauer, is it possible you just have a typo? If I take your code and run it in the console line by line I see

> future::plan(multisession, workers = 4)
Error in eval(first, envir = parent.frame(), enclos = baseenv()) : 
  object 'multisession' not found

This is because we didn't load furrr or future completely, so future::multisession() isn't available to us.

Is it possible you just missed that error?

Here is a full reprex that works for me, with typos fixed

library(tictoc)
library(purrr)
library(furrr)
#> Loading required package: future

tic()
x <- map_dbl(1:4, function(x){
  Sys.sleep(1)
  x^2
})
toc()
#> 4.023 sec elapsed

plan(multisession, workers = 4)

tic()
x <- future_map_dbl(1:4, \(x){
  Sys.sleep(1)
  x^2
})
toc()
#> 1.946 sec elapsed

^{Created on 2023-02-27 with reprex v2.0.2.9000}

from furrr.

Also I encourage you to use the reprex package to create reproducible examples when opening issues! It helps me help you, and often can help you figure out the problem yourself https://reprex.tidyverse.org/articles/learn-reprex.html

from furrr.