On Tue, Jul 29, 2008 at 2:16 PM, Dave Stubbs <[EMAIL PROTECTED]>wrote:
> On Tue, Jul 29, 2008 at 7:57 PM, Inge Wallin <[EMAIL PROTECTED]> wrote: > > In the rather large thread "Actually using OpenStreetMap and the > usability of > > the current maps" I got to understand a few things that I didn't grasp > > before. > > > > So to make a long story short, I have decided to check the viability of > > setting up a Swedish tile server + slippy map and some other services. To > do > > that I am applying for some money from the Swedish Internet Society that > has > > grants for such things. > > > > But to be able to write the application, I need to understand the size of > the > > task. Things like: > > - How long does it take to render a typical tile set? Will a single > machine > > be able to render all the tiles for Sweden, for instance? What's the size > of > > the current render farm for the mapnik map on openstreetmap.org? > > > > - How much bandwidth will it use? > > > > - How difficult is it to set up a working server? I'm fairly skilled in > > deployment, but I have never worked with mapnik, nor osmarender or > > slippymaps. > > > > I am aware that the questions are fuzzy, but all data will be much > > appriciated. > > > > For the cyclemap we prerender the tiles and upload them to a cheap > "dumb" webhost. The coverage of the cyclemap is quite large, but > typically only goes as far down as zoom 13 (or zoom 14 for the UK), we > do selected cities at higher zoom. > > We render on a box with the cheapest quad core processor available > (Core2 Q6600), and 8GB RAM -- this does approximately 1 million tiles > in about 5 hours (and includes contours -- the standard rendering is > 2-3 times faster to render). Our main bottleneck is then uploading > these tiles to the webhost. > > In July the cyclemap used approximately 200GB of bandwidth serving > tiles -- but it is quite popular and the tile sizes are actually quite > large... > > In terms of setup, if you're doing an on-demand modtile solution, then > it relatively easy.. just follow the instructions on the wiki -- give > it a try on a VM first to test out the process on the distro that you > want to use. Relative is obviously relative... but it's easier than > MythTV > > Dave > What's hard about "emerge mythtv"? Unless you want a remote control (lirc), and a LCD display (LCDproc), and RAID (mdadm) and LVM... Oh, I guess it was a bit of a pain. ;-) Karl
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