[Tile-serving] [osm2pgsql] 64 bit ids do not work (#23)

apmon notifications at github.com
Wed May 1 23:18:34 UTC 2013

It should be. But remember you are allocating a large array in memory with NUM_BLOCKS elements.

So if you set it to 64, you are creating a memory array of 2^54 elements, as each element is 24 Bytes, you are allocating an array of ~393216TB size! I am not sure your operating system will like that very much ;-)

If you want to use the full 64bit ID space, then it is going to be very sparse, so using --cache-strategy sparse is the appropriate option.

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