Re: Performance issues when the number of records are around 10 Million

> * select e.cid, timestamp, s.sig_class, s.sig_priority, s.sig_name,
> e.sniff_ip, e.sniff_channel, s.sig_config, e.wifi_addr_1,
> e.wifi_addr_2, e.view_status, bssid  FROM event e, signature s WHERE
> s.sig_id = e.signature   AND e.timestamp >= '1270449180' AND e.timestamp
> < '1273473180'  ORDER BY e.cid DESC,  e.cid DESC limit 21 offset 10539780;

Anything with an offset that high is going to result in a sequential
scan of most of the table.

--
                                  -- Josh Berkus
                                     PostgreSQL Experts Inc.
                                     http://www.pgexperts.com