[Tile-serving] [osm2pgsql-dev/osm2pgsql] Any reasons why osm2pgsql doesn't leverage parallelization during huge maps import (eg: whole world)? (Discussion #2090)

[ghevge]

Is not a disk problem. If you look at the benchmark for  [Planet (PBF) on Ubuntu 20.04, Xeon E3-1245 v2, 32GB + 72GB swap, 4C/8T, 2x 480GB SSD RAID 0 ~25h](https://wiki.openstreetmap.org/wiki/Osm2pgsql/benchmarks#What_affects_import_time?) which is a similar system with  what I have, except for th RAID 0 ( so better HDD performance) and the CPU. But the speeds reported there are about 25% higher than what I see on my side. On my side i have 2 x XEON E5-2630 v2. The 1 core difference between my CPU and  E3-1245 v2 is roughly 25%, where E3-1245 v2 is the fastest. So you see, it is strictly related to the single core CPU performance.




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