Re: TCP keepalive support for libpq

Fujii Masao <masao.fujii@gmail.com>

From: Fujii Masao <masao.fujii@gmail.com>

To: Peter Geoghegan <peter.geoghegan86@gmail.com>

Cc: pgsql-hackers@postgresql.org, Tollef Fog Heen <tollef.fog.heen@collabora.co.uk>, Robert Haas <robertmhaas@gmail.com>, Kevin Grittner <Kevin.Grittner@wicourts.gov>

Date: 2010-02-12T10:15:32Z

Lists: pgsql-hackers

On Fri, Feb 12, 2010 at 6:40 PM, Peter Geoghegan
<peter.geoghegan86@gmail.com> wrote:
>> keepalive doesn't work,
>> then it would have to wait for a long time until it detects
>> the outage.
>
> I'm not really sure what you mean. In this scenario, would it take as
> long as it would have taken had keepalives not been used?

Please see the following threads.
http://archives.postgresql.org/pgsql-bugs/2006-08/msg00098.php
http://lkml.indiana.edu/hypermail/linux/kernel/0508.2/0757.html

Regards,

-- 
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center