leijurv left a comment (osm2pgsql-dev/osm2pgsql#2482)
I have downloaded California, New York, New Jersey, Texas, Poland, Netherlands,
Sweden, some of Japan, and some of England. It's larger than what fits into my
ram.
I think it's reasonable to compare "how long does it take to get all lines &&
the updated tile" with "how long is the rest of the incremental update"?
I will look into trying to measure performance "cold" with nothing cached in
memory.
If performance is a problem, I know for sure I could make it much faster if the
generalization could receive the exact ways that were edited, like carto's flex
lua code, rather than Z/X/Y tiles. That way the slow part (the &&tile_box) can
be skipped entirely.
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