David Kerr <dmk@mr-paradox.net> writes:
> Fortunately the network throughput issue is not mine to solve.
> Would it be fair to say that with the pgbench output i've given so far
> that if all my users clicked "go" at the same time (i.e., worst case
> scenario), i could expect (from the database) about 8 second response time?
For the hardware you've got, and ignoring the network bandwidth issue,
that appears to be a fair estimate of the worst case response.
regards, tom lane