Hi Chris, Thanks for your answer.
Chris Jones wrote: > On Fri, 22 Feb 2008, Jo wrote: > >> Say I would like to set up a server myself. I want to: >> >> * show highways more with the colours used on Michelin maps >> * show a bicycle map as three overlays (transparent, with a possibility >> to switch them on and off) >> * show bus routes for each bus separately as overlays (transparent >> layers) >> >> 1. Is this possible? > > Yes Great. > >> 2. What do I need? PostgreSQL? Python? What else? > > See http://wiki.openstreetmap.org/index.php/Mapnik It's rather short. Is it really that simple...? How often is the planet file generated? Say I would like to have daily updates instead of weekly. Is that possible? I guess I should just try it... > >> 3. What kind of server would be good for this? Would an AMD64 with one >> core be able to do this? Do I need more cores? Does 64 bit processing >> help? Or would I be just as well off with a Core2Duo or even a >> Pentium 4? > > Any recent processor is fine, obviously the faster the core(s) the > more tiles you can render in a given time. So an AMD64 would be OK then. > >> 4. For the disks I was considering to set up a RAID1 mirror with 2 disks >> of 750 GB. I guess that would be sufficient? > > How much storage you need depends on how much of the world you would > like to render and to what zoom level. > > I render the whole UK to level 5 and just Wales to zoom 16, this uses > a mere 450MB > > In my experience each zoom level is roughly 2.5x bigger (in terms of > disk space) than the previous. > > Unless your planning to serve the whole world, to hundreds of clients > at a time (which your connection info below suggests your not) RAID1 > is massive overkill! The regularly requested tiles will get cached in > memory anyway further reducing the disk speed requirements. I'm not sure if I want the whole world. I do want to render Belgium and probably a good part of mainland Europe. The server would also be used for my own purposes. Firewall, OpenLDAP, Postfix, HTTP, Proxy server, Asterisk, maybe MythTV, LTSP, Nagios. I simply feel more comfortable with a RAID1 setup. I wouldn't mind it uses spare cycles to render a map. > > I serve (pre-rendered) tiles from a NSLU2* running Debian with a USB > stick for storage. This setup quite happily serves ~150 tiles per second. > > *http://en.wikipedia.org/wiki/NSLU2 > >> I would like to do this from 'home' with a connection that has a fixed >> IP address and 1 or 2 Mbps upload. I'll probably be shaping the traffic >> to limit it and make my own internet connection still usable. > > With a 2 Mbps upload you should be able to serve about 40 tiles per second That should be enough. I'll probably shape it down to 700kbps then. Polyglot _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
