On a 7.3.4 database:
explain analyse select count(*) from elog;
Aggregate (cost=223764.05..223764.05 rows=1 width=0) (actual
time=81372.11..81372.11 rows=1 loops=1)
-> Seq Scan on elog (cost=0.00..203012.24 rows=8300724 width=0)
(actual time=3.91..71542.53 rows=8313762 loops=1)
Total runtime: 81378.42 msec
(3 rows)
It looks like the aggregate took 10 secs all by itself. What's taking
so long?