[OSM-dev] Slow rendering

[Stephan Knauss]

On 04.05.2021 14:59, Hartmut Holzgraefe wrote:
> On 04.05.21 13:50, Alex Chirigiu wrote:
>> Europe to Zoom 18/19 maybe. We managed to render Z15 completely, but 
>> it took like 17 days...
> 
> that would be in the ballpark of about 50 tiles per second, right?

I think this depends on the definition of "Europe" in this context.

According to the tile calculator on Geofabrik, a bounding box of Europe 
covers around 26M tiles. So 406,250 metatiles.

With this rendered in 24.480 minutes, we end up in a ballpark of 16-17 
metatiles per minute (or 17 tiles per second).
That number sounds a bit slow, as even my tiny Hetzner EX52 is offering 
nearly twice that speed.

I hope that Alex is going to share some figures and optimization results 
here on the list.
So @Alex: Even with you potentially paying someone for optimizing your 
rendering stack, would be great if you could share the results so others 
could benefit in the future as well.

Stephan