On Wed, Nov 19, 2014 at 12:50:09PM +0100, Rémi Cura wrote: > Hey Sandro, > in my opinion we don't need a better speed for current construction, we > need a batch constructing mode !
This is for sure, as the current one just does the intial noding but finally invokes the incremental functions. > Optimally it could be done by using the geos, because it constructs all the > topology very very fast. Possibly, yes. Then I guess attributes association would be left to a second step... > Adding one feature is actually quite fast, even on already big topology. > > Its when you want to add a lot's that it becomes increasingly slow (maybe > because indexes are not updated,or because we are in one transaction?) > The slowing seems to be very non linear, probably following n^2, where n is > the number of feature already constructed in the transaction. An issue with index use was recently fixed. There might be another one hiding somewhere. --strk; _______________________________________________ postgis-users mailing list [email protected] http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users
