[pgpool-general: 4785] Re: listen backlog overflowing

Tatsuo Ishii ishii at postgresql.org
Wed Jul 13 07:56:09 JST 2016


> What can cause the backlog to overflow?

Have you actually seen something like this?

535 times the listen queue of a socket overflowed

> I've increased the somaxconn and max_backlog  sysctl parameters.
> 
> net.core.somaxconn = 16384
> net.core.netdev_max_backlog = 16384
> 
> pgpool  conf
> 
> listen_backlog_multiplier = 5
> num_init_children = 40
> max_pool = 5
> child_life_time = 300
> child_max_connections = 0
> connection_life_time = 0
> client_idle_limit = 600
> 
> Any ideas would be great!!!

If so, strange... is the server dedicated for pgpool-II? or do you
have another software running on the same server which could use the
listen queue?

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp


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