In case someone is interested. Importing an #Openstreetmap planet file into #postgresql using #osm2pgsql in non-slim mode took me just under 5 hours here and requires a machine with at least 128GB RAM.
@giggls I can import Europe into a 7yo laptop w/ 32GiB of RAM and an m.2 in 14h. Not sure what speed that m.2 gives, but I use slim mode.
@mdione I tend to use non-slim mode if I do not need an updatable database.
@giggls good point; I keep min up to date for rendering.