On Sat, Nov 3, 2012 at 10:09 AM, Gunnar "Nick" Bluth <gunnar.bluth@xxxxxxxxxxx> wrote: > Well, I'm pretty sure that having more work_mem is a good thing (tm) > normally ;-) In my experience when doing sorts in isolation, having more work_mem is a bad thing, unless it enables you to remove a layer of tape-merging. I always blamed it on the L1/L2 etc. levels of caching. Cheers, Jeff -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance