Re: Performance Tuning and Disk Cache - Mailing list pgsql-performance

On Sun, Mar 18, 2007 at 06:45:34AM -0600, Barry Moore wrote:
>Does anyone know how I can repeatedly run the same query in the
>"worst case scenario" of no postgres data in the disk cache (e.g.,
>clear the page cache or force it to be ignored)?

Depends on your OS. On linux you can run:
echo 1 > /proc/sys/vm/drop_caches

Mike Stone