On Fri, Jan 4, 2013 at 11:41 AM, nobody nowhere <devnull(at)mail(dot)ua> wrote:
> So how many concurrent users are accessing this db? pgsql assigns one
> process on one core so to speak. It can't spread load for one user
> over all cores.
>
> 64 php Fast-cgi processes over the Unix socket and about 20-30 over tcp
I guess that means the server isn't dedicated to postgres...
...have you checked which PID is using that core? Is it postgres-related?