Re: Log connection establishment timings

From: Jelte Fennema-Nio <postgres(at)jeltef(dot)nl>
To: Melanie Plageman <melanieplageman(at)gmail(dot)com>
Cc: Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Daniel Gustafsson <daniel(at)yesql(dot)se>, andrey(dot)chudnovskiy(at)microsoft(dot)com
Subject: Re: Log connection establishment timings
Date: 2024-12-16 23:26:20
Message-ID: CAGECzQQp0kzsgCdkMdFEiqmnVCc8YGKEVSRcqVPyMbRJVb6B_Q@mail.gmail.com
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On Mon, 16 Dec 2024 at 22:00, Melanie Plageman
<melanieplageman(at)gmail(dot)com> wrote:
> Users wishing to debug slow connection establishment have little
> visibility into which steps take the most time. We don't expose any
> stats and none of the logging includes durations.

Two thoughts:
1. Would it make sense to also expose these timings in some pg_stat_xyz view?
2. As a user I'd be curious to know how much of the time is spent on
the network/client vs inside postgres. For example for the scram/sasl
handshake, how much of the authentication_time is spent waiting on the
first "read" after the server has called sendAuthRequest.

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