pgsql: Doc: document possible need to raise kernel's somaxconn limit.

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Doc: document possible need to raise kernel's somaxconn limit.
Date: 2022-08-23 14:15:18
Message-ID: E1oQUgX-000r5q-5l@gemulon.postgresql.org
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Doc: document possible need to raise kernel's somaxconn limit.

On fast machines, it's possible for applications such as pgbench
to issue connection requests so quickly that the postmaster's
listen queue overflows in the kernel, resulting in unexpected
failures (with not-very-helpful error messages). Most modern OSes
allow the queue size to be increased, so document how to do that.

Per report from Kevin McKibbin.

Discussion: https://postgr.es/m/CADc_NKg2d+oZY9mg4DdQdoUcGzN2kOYXBu-3--RW_hEe0tUV=g@mail.gmail.com

Branch
------
REL_13_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/3ccdeff7bf1971d4a4ecece02f3ba3ec64d4a3ad

Modified Files
--------------
doc/src/sgml/runtime.sgml | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

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