On Tue, Apr 26, 2011 at 8:59 AM, Joel Reymont <joelr1(at)gmail(dot)com> wrote:
> I'm running pgsql on an m1.large EC2 instance with 7.5gb available memory.
>
> The free command shows 7gb of free+cached. My understand from the docs is that I should dedicate 1.75gb to shared_buffers (25%) and set effective_cache_size to 7gb.
>
> Is this correct? I'm running 64-bit Ubuntu 10.10, e.g.
It's a reasonable start. However, if you consistently using less than
that in aggregate then lowering it is fine. What's your work_mem and
max_connections set to?