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I'm trying to pre-render the whole of North America from zoom level 6 to 18 using the below command

/usr/bin/perl ./ -l 28 -n 16 -z 6 -Z 18 -x -168.8 -X -50.8 -y 23.6 -Y 71.8 -m default

As per my calculations it should take around 2.8 TB disk space. The postgresql DB is on SSD drives while the tiles are being stored on SAS drives. When I had imported the OSM DB, it took only 61 hours for a planet import so I think drives are quite fast.

The pace of pre rendering is around 40 GB per day. At this pace it will take months for the pre rendering to finish. Please suggest how it can be made faster.

I am not sure whats the bottleneck because the server has fast drives and has 64 GB RAM and 32 cpu cores. The disk IOs are mostly un-utilized.

Pre rendering from zoom 6 to 15 is finished and right now its pre rendering zoom 16. Its the pace of pre rendering that worries me.,23.6,-50.8,71.8&grid=1

If I pre rendered the above area from zoom 6 to zoom 18 then how long would it normally take. Please forgive me if I've asked any stupid question because this is the first time I'm configuring this server and have little knowledge of it.

asked 02 Oct '18, 07:47

augustusj's gravatar image

accept rate: 0%

edited 04 Oct '18, 12:18

Please help me with this issue

(05 Oct '18, 06:12) augustusj
(05 Oct '18, 17:39) alester

yes. I'm eager to get a response but nothing yet

(08 Oct '18, 05:29) augustusj

If nobody has a solution for you and this problem is important enough to invest some money you could consider getting professional help, for example by contacting one of the companies listed at

(12 Oct '18, 07:49) scai ♦

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question asked: 02 Oct '18, 07:47

question was seen: 1,469 times

last updated: 12 Oct '18, 07:49

NOTICE: is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum