Re: BUG #2576: tcp_keepalive doesn't work - Mailing list pgsql-bugs

From Fujii Masao
Subject Re: BUG #2576: tcp_keepalive doesn't work
Date
Msg-id 44E58915.5090202@oss.ntt.co.jp
Whole thread Raw
In response to Re: BUG #2576: tcp_keepalive doesn't work  (Fujii Masao <fujii.masao@oss.ntt.co.jp>)
Responses Re: BUG #2576: tcp_keepalive doesn't work
List pgsql-bugs
Hi.

I found the cause of the error that tcp_keepalive doesn't work.
The cause is a specification of linux kernel.

In the specification of linux kernel, tcp_keepalive doesn't work
if the network outage occurs before receiving ACK for send() system-call.
This behavior of tcp_keepalive is reported even by LKML.

Linux-Kernel Archive: Re: 2.6.12.5 bug? per-socket TCP keepalive settings
http://www.ussg.iu.edu/hypermail/linux/kernel/0508.2/0757.html


I'm confused whether tcp_keepalive problem should be solved
at the DB level.


regards;

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