[postgis-devel] brainstorming about topology polygonizer

[Sandro Santilli]

On Fri, Sep 16, 2016 at 08:00:27AM +0200, Sandro Santilli wrote:

> > I'll try a different approach, along these lines:
> > 
> >    geom = (GSERIALIZED *)PG_DETOAST_DATUM_COPY(dat);
> >    lwg = lwgeom_from_gserialized(geom);
> >    edge->geom = lwgeom_clone_deep(lwg);
> >    lwgeom_free(lwg);
> >    pfree(geom);
> 
> This test reduced the Maximum resident set size (kbytes) of the
> "Arezzo UCS" case from 
> 772400 to
> 722460
> 
> Not a huge benefit !

I finally got a bigger fish: the topology callbacks were just
never releasing memory associated with resultsets

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