On Sun, Oct 19, 2008 at 01:05:02AM +0200, Lambertus wrote:
OK. That was what I asked about - those checks are quite expensive, so I'm looking for ideas how to speed them up.Does gosmore check place=... areas to determine whether a way is inside a built-up area to adjust the speed accordingly? In that case I'll have to dig into the Gosmore source again to see how Nic got it this fast. :)No, afaik Gosmore does not do that.
I don't think we agree there - IMO default maximum speeds (e.g. 50km/h inside cities) shouldn't be explicitly tagged. That's a different discussion, though, let's have it on talk if at all. I'll just mention that setting the default maximum speed for _cars_ as maxspeed=... means entering wrong data for the other vehicle types: In Germany speed limit signs within a built-up area may actually _raise_ the limit above defaults for _all_ vehicle types.And if appropriate maxspeeds are tagged then it won't need to.
Perhaps you use this during namefinder lookups?
It's a simple yes/no check, no names.
Gosmore doesn't use much ram while parsing the planet data so I'm pretty sure it will scale linear whatever the amount of data.The amount of RAM used for temporary data is quite low, but the whole database is mmap()ed into memory. I thought Gosmore does the same?!
CU Sascha -- http://sascha.silbe.org/ http://www.infra-silbe.de/
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