fswatch is horribly slow on setting up inotify

[cryptomilk]

neovim tired to improve the watchfunc for lsp servers and used fswatch. However fswatch is horribly slow on set up.

Doing the following in the Samba source code

fswatch --event=Created --event=Removed --event=Updated --event=Renamed --event-flags --recursive

takes ~90sec to just set up inotify before I get any notifications!

In comparison:

inotifywait --event modify --event create --event delete --monitor --rescursive

needs less than 1 second to set up and get notifications!