From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Kellerer <shammat@gmx.net>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: PostgreSQL local connection is taking 4 seconds
Date: Tue, 02 Jan 2024 11:27:26 -0500
Message-ID: <4096247.1704212846@sss.pgh.pa.us> (raw)
In-Reply-To: <006c932a-d986-d0d1-61cd-065ffbe71fb3@gmx.net>
References: <CAHkcXnyVu3HJSrzRu9KA0T9cLgJxSkHfW2tYJdBg+ozYxZy_qw@mail.gmail.com>
<006c932a-d986-d0d1-61cd-065ffbe71fb3@gmx.net>
Thomas Kellerer <shammat@gmx.net> writes:
> pramod kg schrieb am 02.01.2024 um 14:58:
>> We have upgraded the OS from RHEL7 to RHEL8 in our testbed machines. After upgrading, PostgrSQLÂ local connection is taking ~4 seconds (Both TLS and non TLS connection). Please advise on what to be verified? There is no change in postgresql.conf or pg_hba.conf.
> Did you enable log_hostname?
> That does a revers DNS lookup which could be a reason for the connection suddenly taking longer.
Even without log_hostname, it could be a slow-DNS-lookup problem.
Rather than guessing, though, it might be time to try strace'ing
the psql session to see what it's waiting for.
regards, tom lane
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, shammat@gmx.net, pgsql-admin@lists.postgresql.org
Subject: Re: PostgreSQL local connection is taking 4 seconds
In-Reply-To: <4096247.1704212846@sss.pgh.pa.us>
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