On 7 February 2011 08:52, Jin Kang <[email protected]> wrote: > Dear all, > > This is Jin Kangfrom Rainbow. We are currently do Japanese map rendering up > to zoom level 16 using hosting service like Slicehost. On average, it takes 7 > mins to render for one tile and for level 10, it only takes 1 sec for 1 tile. > Seems like the rendering speed got much slower if it goes to more than level > 10. We might be doing something wrong and in current speed we are expecting > 1-2 month to render all map of Japan. For your information, below is current > server status. > > $ free -m > total used free shared buffers cached > Mem: 2003 1917 85 0 75 1333 > -/+ buffers/cache: 509 1493 > Swap: 4095 1 4094 > > $ uptime > 14:21:02 up 27 days, 17:39, 2 users, load average: 4.68, 4.36, 4.27 > > We are struggling for several month for this rendering but still the > rendering speed is too slow. We followed several comments from community but > still not getting better. If you have any suggestion or idea from you > experience, it will help us. > > Thanks in advance!
I am no expert, but this is what I would do. First try and find out what part of the rendering process is taking the time. Is it the actual render, or is it reading the data? With a little project that I was doing, I found that I had to add some constraints in my select statements so that it would ignore all the data that was not part of the current view. This made it much faster. If you find your database is the bottleneck, maybe you could do something similar. -- Philip Stubbs _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
