{"action":"created","issue":{"url":"https://api.github.com/repos/geometalab/osm2vectortiles/issues/30","labels_url":"https://api.github.com/repos/geometalab/osm2vectortiles/issues/30/labels{/name}","comments_url":"https://api.github.com/repos/geometalab/osm2vectortiles/issues/30/comments","events_url":"https://api.github.com/repos/geometalab/osm2vectortiles/issues/30/events","html_url":"https://github.com/geometalab/osm2vectortiles/issues/30","id":110469911,"number":30,"title":"Compare imposm with osm2pgsql","user":{"login":"lukasmartinelli","id":1288339,"avatar_url":"https://avatars.githubusercontent.com/u/1288339?v=3","gravatar_id":"","url":"https://api.github.com/users/lukasmartinelli","html_url":"https://github.com/lukasmartinelli","followers_url":"https://api.github.com/users/lukasmartinelli/followers","following_url":"https://api.github.com/users/lukasmartinelli/following{/other_user}","gists_url":"https://api.github.com/users/lukasmartinelli/gists{/gist_id}","starred_url":"https://api.github.com/users/lukasmartinelli/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lukasmartinelli/subscriptions","organizations_url":"https://api.github.com/users/lukasmartinelli/orgs","repos_url":"https://api.github.com/users/lukasmartinelli/repos","events_url":"https://api.github.com/users/lukasmartinelli/events{/privacy}","received_events_url":"https://api.github.com/users/lukasmartinelli/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/geometalab/osm2vectortiles/labels/evaluation","name":"evaluation","color":"fbca04"}],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/geometalab/osm2vectortiles/milestones/5","html_url":"https://github.com/geometalab/osm2vectortiles/milestones/ELABORATION","labels_url":"https://api.github.com/repos/geometalab/osm2vectortiles/milestones/5/labels","id":1351055,"number":5,"title":"ELABORATION","description":"After the Alpha where we tried out the different technologies and built an initial prototype (that does not scale) we have many decisions to make and questions to ask and are essential for the further BETA and STABLE milestones. In\r\n\r\n- osm2pgsql vs imposm\r\n- Wikimedia tm2source vs custom\r\n- Tileserver performance\r\n- How to parallelize the export process\r\n- Can we export the world?","creator":{"login":"lukasmartinelli","id":1288339,"avatar_url":"https://avatars.githubusercontent.com/u/1288339?v=3","gravatar_id":"","url":"https://api.github.com/users/lukasmartinelli","html_url":"https://github.com/lukasmartinelli","followers_url":"https://api.github.com/users/lukasmartinelli/followers","following_url":"https://api.github.com/users/lukasmartinelli/following{/other_user}","gists_url":"https://api.github.com/users/lukasmartinelli/gists{/gist_id}","starred_url":"https://api.github.com/users/lukasmartinelli/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lukasmartinelli/subscriptions","organizations_url":"https://api.github.com/users/lukasmartinelli/orgs","repos_url":"https://api.github.com/users/lukasmartinelli/repos","events_url":"https://api.github.com/users/lukasmartinelli/events{/privacy}","received_events_url":"https://api.github.com/users/lukasmartinelli/received_events","type":"User","site_admin":false},"open_issues":4,"closed_issues":0,"state":"open","created_at":"2015-10-12T15:29:25Z","updated_at":"2015-10-12T15:30:17Z","due_on":"2015-10-22T22:00:00Z","closed_at":null},"comments":6,"created_at":"2015-10-08T14:56:55Z","updated_at":"2015-10-13T06:14:10Z","closed_at":null,"body":"Currently running an osm2pgsql import of Europe for comparison.\r\nPublic benchmarks indicate imposm3 is at least 3x times faster.\r\n\r\nIf osm2pgsql is not too slow it might be an option for use with the kartotherian tm2source, which would mean less work for creating the vector tiles at the cost of longer import and generation (because tables are no longer generalized etc.) time."},"comment":{"url":"https://api.github.com/repos/geometalab/osm2vectortiles/issues/comments/147616027","html_url":"https://github.com/geometalab/osm2vectortiles/issues/30#issuecomment-147616027","issue_url":"https://api.github.com/repos/geometalab/osm2vectortiles/issues/30","id":147616027,"user":{"login":"lukasmartinelli","id":1288339,"avatar_url":"https://avatars.githubusercontent.com/u/1288339?v=3","gravatar_id":"","url":"https://api.github.com/users/lukasmartinelli","html_url":"https://github.com/lukasmartinelli","followers_url":"https://api.github.com/users/lukasmartinelli/followers","following_url":"https://api.github.com/users/lukasmartinelli/following{/other_user}","gists_url":"https://api.github.com/users/lukasmartinelli/gists{/gist_id}","starred_url":"https://api.github.com/users/lukasmartinelli/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lukasmartinelli/subscriptions","organizations_url":"https://api.github.com/users/lukasmartinelli/orgs","repos_url":"https://api.github.com/users/lukasmartinelli/repos","events_url":"https://api.github.com/users/lukasmartinelli/events{/privacy}","received_events_url":"https://api.github.com/users/lukasmartinelli/received_events","type":"User","site_admin":false},"created_at":"2015-10-13T06:14:10Z","updated_at":"2015-10-13T06:14:10Z","body":"Answer from Yuri from Kartotherian.\r\n\r\n**Why did you choose osm2pgsql and how are the query times for producing the vector tiles?**\r\n\r\n> We chose osm2pgsql because it is well established and because it can generate the list of invalidated tiles - this way we can regenerate tiles that have been changed. We have been thinking about other options, but for now we will probably stay with osm2pgsql. The initial PBF import runs about 12 hours, after which we will only import the changes, which should be very fast.\r\n"}}