Well imo first course of action would be to add some trace statements into the code, presumably using boost::timer to time how long it takes for each phase of the rendering. That would narrow down to where the bottleneck is for specific optimisation.
Otherwise, you could make a detailed description of your setup including a download for the data that you use and the command(s) you use to render. Are you doing the rendering from the command line or from code? If the last you'd also need to post the minimal code sample that exhibits the problem. cheers, roel On Mon, Feb 7, 2011 at 9:52 AM, 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! > > -Jin > _______________________________________________ > 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
