Hi Jaume, Thanks for the comments!
From your experience, in general how long does it take to render one tile? Thanks in advance! Regards, -Jin On Nov 18, 2010, at 5:30 PM, Jaume Figueras wrote: > Hi, > > I'm an absolute newby with mapnik, but this is just about computing > exponential costs. > > Suppose you have japan in 1 tile, and you like to render 10 levels of zoom. > And hen you zoom each tile it generates 4 tiles, so: > > 1 + 4 + 16 + 64 + 256 + 1024 + 4096 .... > 4¹+ 4²+4³+4⁴ .... > > so for level 10 you have to render 4¹⁰ tiles = 1048576 > > if one tile takes just one second to render you will need 1048576 seconds to > render just level 10, this are 291 hours or 12 days. > > This is just an example, i do not know exactly if when zooming one tile > explode to four, but the computing cost is 100% exponential. > > Salut! > > Jaume. > > On 11/18/2010 03:53 AM, Jin Kang wrote: >> Hi Kenneth, >> >> Thanks for the quick feedback! We will look into this as you suggested. >> >> Kind regards, >> >> J >> >> On Nov 18, 2010, at 11:43 AM, Kenneth Gonsalves wrote: >> >>> On Thu, 2010-11-18 at 11:07 +0900, Jin Kang wrote: >>>> We are currently rendering OSM using mapnik in Window platform with >>>> reasonable spec of h/w (2.6G CPU and 3G RAM). We just want to know >>>> usually how long does it takes to render OSM map. Currently we are >>>> trying to render Japanese map but seems like it is running more than 1 >>>> weeks and still running. Your comments will be very helpful. Thanks in >>>> advance! >>> >>> how are you rendering? are you using mod_tile - if not it may take >>> forever (I remember trying to render just India on my VPS and it was >>> still running after 10 days) >>> -- >>> regards >>> Kenneth Gonsalves >>> >> >> _______________________________________________ >> Mapnik-users mailing list >> [email protected] >> https://lists.berlios.de/mailman/listinfo/mapnik-users >> > _______________________________________________ > Mapnik-users mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/mapnik-users _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
