PostgreSQL statement latency

Hi,

What is the right way to measure PostgreSQL statements
latencies in pgbench? I found several solutions:

1. in PostgreSQL
9.1 (for example, with an option -r) -> pgbench  -S -c 8  -t 2000 -r
pgbench

2.
http://www.westnet.com/~gsmith/content/postgresql/pgbench.htm (is this
solution only for version 8.2.3)?

I would like to build the graph
- Latency (ms) versus Time during test. I am running PostgreSQL on
Windows 7 - How could I do it?

----------------------------
Vaata, mida põnevat telest tuleb!
minuTV.ee
www.minutv.ee