On 1/23/2012 5:24 PM, David Johnston wrote:
> Immediately upon starting the server I get an "incomplete startup packet" log message. Just prior there is an "autovacuum launcher started" message.
>
We've found that this message is printed in the log if a client makes a
TCP connection to the PG server, but sends no traffic.
For example it happens with our monitoring system, which checks that it
can open a TCP connection to the PG port, then
closes it.