times and memory consumption to expect when calculating big datasets

[pcace]

Hi there,

i am wondering what times and used resources i can expect, when calculating big graphs like full germany (https://gtfs.de/en/feeds/de_full/) using gtfs2graph latest.zip > all.json

is there any whay to estimate memory / time consumption for this task? or any way to speed things up?
same question also applies to loom (cat all.json | loom | transitmap --render-engine=mvt --zoom=8,9,10 --mvt-path=tiles/)

thanks a lot!

PS.: also is there any plan to calculate things in parallel? currently it seems like gtfs2graph is running on a single thread.