"Kevin Grittner" <[email protected]> writes:
> Mindaugas ´ak¨auskas<[email protected]> wrote:
>> The essence is that establishing remote connection takes anywhere
>> from 10 to 30 seconds. Once connected, the queries are fast
> The only time I've seen something similar, there was no reverse DNS
> entry to go from IP address to host name. Adding that corrected the
> issue. I would try that.
> If that fixes it, the questions would be whether PostgreSQL is doing
> an unnecessary reverse DNS lookup.
Having log_hostname off is supposed to prevent us from attempting a
reverse DNS lookup ... but it would be worth checking into whether one
is happening anyway. (I would think though that such activity would
be visible in strace/truss output. Perhaps you should turn log_hostname
*on* and verify that you see the lookup activity in strace that wasn't
there before.)
regards, tom lane
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