what about "created" tags? they are pretty much useless too.2G difference on the uncompressed planet file.
On Tue, Jul 21, 2009 at 10:48 AM, Andy Allan <gravityst...@gmail.com> wrote: > On Tue, Jul 21, 2009 at 3:38 PM, Frederik Ramm<frede...@remote.org> wrote: > > Hi, > > > > Andy Allan wrote: > >> > >> Tiger node tags make up 85.43% of all node tags and take up: > > > > [...] > > > > I just did a little test, prepared an .osc document that removed the node > > tags from about 1000 nodes: > > > > http://www.openstreetmap.org/browse/changeset/1894387 > > > > It came out at roughly 10 node changes per second. I count 177m nodes > with > > TIGER tags, which means that the whole process would take about 200 days > on > > one API thread. It might be slightly faster if you upload larger or > smaller > > chunks - would have to do some experimenting to find the sweet spot. Time > > could also be saved by running it one the LAN (on dev), but again > probably > > not a lot. > > Ah, good stuff. I was assuming the best way to do it was a script on > dev doing 50,000 nodes at a time (i.e. max diff upload) when it came > to hitting the sweet-spot, but I'm interested in your experiments. > > Like you, I'm a bit concerned about the side effects of creating x > billion changesets, but for replication, verification etc it's nice to > behave nicely (i.e. through the API). But that just gives everyone an > added incentive to stop other people doing ill-constructive bulk > imports in the first place! The sooner we can clear this from TIGER > the fewer people will use it as an example to aim for. > > Cheers, > Andy > > _______________________________________________ > dev mailing list > dev@openstreetmap.org > http://lists.openstreetmap.org/listinfo/dev >
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