On Fri, Apr 9, 2010 at 10:03 AM, Greg Smith <greg@2ndquadrant.com> wrote:
> The main problem with this configuration is that work_mem is set to an
> unsafe value--1.6GB. With potentially 400 connections and about 2GB of RAM
> free after starting the server, work_mem='4MB' is as large as you can safely
> set this.
> maintenance_work_mem | kB | 256MB
Note that 256MB maintenance_work_mem on a machine with 3 autovac
threads and only 2 Gig free is kinda high too.