I have a 16G box and tmpfs is configured to use 8G for tmpfs . Is a lot of memory being wasted that can be used for Postgres ? (I am not seeing any performance issues, but I am not clear how Linux uses the tmpfs and how Postgres would be affected by the reduction in memory) Sriram -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance