On Mon, Oct 18, 2010 at 3:48 PM, Aleksey Tsalolikhin
<atsaloli.tech at gmail.com> wrote:
> I've increased the alert threshold to 30 minutes as an immediate
> measure, but is there any way to reduce pg_dump's impact on
> replication?  or will we pretty much have to live with it?
>

Your hardware is approaching the limits of the workload you are
throwing at it.  I'd recommend adding more RAM and/or tuning postgres
to use more of it somehow.  Either that or faster disks, or both.