give MonetDB (GDK) a hand with memory management: explicitly BATsave and "suspend" (lrefs++; refs--;) large (mmapped) partitions that individually (just) fit in mem but combined exceed mem.
give MonetDB (GDK) a hand with memory management:
explicitly BATsave and "suspend" (lrefs++; refs--;)
large (mmapped) partitions that individually (just)
fit in mem but combined exceed mem.

pushed 200M below 30secs;
does not yet help for 400M (8-10min) & 1G (~30min)

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb