On 10/2/2011 10:49 PM, David Boreham wrote:
>
> There are some OS differences between the old and new servers : old is
> running CentOS 5.7 while the new is running 6.0.
> Old server has atime enabled while new has relatime mount option
> specified. Both are running PG 9.1.1 from the yum repo.
>
>
Also the old server is using ext3 while the new has ext4 (with
discard/trim enabled).