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Disk and Memory Requirements
Note: the following rough numbers are as of v5.26 and on OpenStreetMap planets from November 2021.
| 11/2021, 61GiB .pbf | extract | partition (mld) | customize (mld) | contract (ch) |
|---|---|---|---|---|
| car | 415 GiB | 220 GiB | 174 GiB | 230 GiB |
| foot | 476 GiB | 228 GiB | 184 GiB |
you'll also need about 300 GB disk space for the generated datafiles.
The sizes scale roughly linear with input data size.
The profile has a big impact on size - the foot profile includes a lot more ways/roads/paths than the car profile, so it needs more resources. The cycling profile sits somewhere in between.
For the car profile you will need
- around 123 GiB of RAM
We basically just load all the files into memory, so whatever the output file size from pre-processing - that's roughly how much RAM you'll need (minus the size of the .fileIndex file, which is mmap()-ed and read on-demand, and a few files which are left after the build, but which are not needed during run time).