On Wed, Oct 12, 2016 at 10:16 AM, Heikki Linnakangas <hlinn...@iki.fi> wrote: > Let's switch over to a simple k-way balanced merge. Because it's simpler. If > you're severely limited on memory, like when sorting 1GB of data with > work_mem='1MB' or less, it's also slightly faster. I'm not too excited about > the performance aspect, because in the typical case of a single-pass merge, > there's no difference. But it would be worth changing on simplicity grounds, > since we're mucking around in tuplesort.c anyway.
This analysis seems sound. I suppose we might as well simplify things while we're at it. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers