Re: heavy swapping, not sure why

On August 29, 2011 02:34:26 PM you wrote:
> On Mon, Aug 29, 2011 at 3:46 PM, Alan Hodgson <ahodgson@simkin.ca> wrote:
> > On August 29, 2011 01:36:07 PM Lonni J Friedman wrote:
> >> I have several Linux-x68_64 based dedicated PostgreSQL servers where
> >> I'm experiencing significant swap usage growth over time.
> >
> > It's the Linux kernel that does it, not PostgreSQL. Set vm.swappiness=0
> > (usually in /etc/sysctl.conf) and put that into effect.
>
> that won't help and, in almost all cases, is a bad idea.

Overly aggressive swapping with the default settings has frequently caused me
performance issues. Using this prevents those problems.