On Wed, 2008-05-28 at 16:59 -0700, Josh Berkus wrote: > sort_mem: My tests with 8.2 and DBT3 seemed to show that, due to > limitations of our tape sort algorithm, allocating over 2GB for a single > sort had no benefit. However, Magnus and others have claimed otherwise. > Has this improved in 8.3?
There is an optimum for each specific sort. Your results cannot be used to make a global recommendation about the setting of work_mem. So not finding any benefit in your tests *and* Magnus seeing an improvement are not inconsistent events. -- Simon Riggs www.2ndQuadrant.com PostgreSQL Training, Services and Support -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
