Profile emacs usepackage

If you’d like to see how many packages you’ve loaded, what stage of
initialization they’ve reached, and how much aggregate time they’ve
spent (roughly), you can enable use-package-compute-statistics after
loading use-package but before any use-package forms, and then run the
command M-x use-package-report to see the results. The buffer
displayed is a tabulated list. You can use S in a column to sort the
rows based on it.