[OSM-dev] OSM tile server: concurrency of rendering + updating

[Frederik Ramm]

Hi,

    this is mostly a question to Jon Burgess  I guess but I'm asking on 
dev because I figure that others might also be interested. On the main 
OSM tile server, do you apply the diffs while you render tiles at the 
same time, and have you performed any PostGIS magic to ensure that tile 
rendering still has priority while diffs are being applied?

On my setup, I have resorted to using two separate databases (on 
separate machines) in order to be able to update one while the other 
renders tiles; doing both at the same time just slowed down tile 
rendering to a crawl. Now this was not fancy hardware but a reasonably 
modern quadcore processor and SATA disks - do fat RAM & fast disks make 
the difference between possible and impossible?

Bye
Frederik