On 01/28/2015 01:32 AM, Paul Norman wrote: > It would be up to the system administrators and OWG to decide if they > wanted to deploy retina tiles. Deploying a second set of tiles would > increase the CDN cache miss rate, increase the rendering required, and > significantly increase the disk space required for tiles. The last is > likely to be particularly significant as I don't believe the machines > have the free disk required to more than double the cache.
It might be possible to just render/cache the HD tiles, and then scale them down on the fly for non-HD requests - only one set of tiles would need to be stored/cached, at the cost of some wasted cpu-cycles for the scaling. However, in addition to the problem of limited resources, I don't think the style is ready yet. Though there has been a lot of progress lately, the openstreetmap-carto-style has many symbols, and many still aren't SVG and thus are not "HD ready" - they look really ugly in HD tiles. I'm unaware of a public demo-instance, so this is mine, showing how the openstreetmap-carto-style currently looks like when rendered in HD: https://osm.rrze.fau.de/testhd.html (this is really just tirex with scalefactor=2.0, tilesize=512, buffersize=768 set on a checkout of openstreetmap-carto) -- Michael Meier, Zentrale Systeme Friedrich-Alexander-Universitaet Erlangen-Nuernberg Regionales Rechenzentrum Erlangen Martensstrasse 1, 91058 Erlangen, Germany Tel.: +49 9131 85-28973, Fax: +49 9131 302941 [email protected] www.rrze.fau.de _______________________________________________ dev mailing list [email protected] https://lists.openstreetmap.org/listinfo/dev
