From: Victor Sudakov <vas@sibptus.ru>
To: pgsql-admin@lists.postgresql.org
Cc: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Subject: Re: pgbouncer logs and its efficiency
Date: Wed, 2 Feb 2022 08:45:05 +0000
Message-ID: <YfpEkSZ/TUtZRQe6@admin.sibptus.ru> (raw)
In-Reply-To: <2d4321bd-0174-42c9-3671-fa9626326d10@enterprisedb.com>
References: <YfNtsr+D6JKPmncK@admin.sibptus.ru>
<2d4321bd-0174-42c9-3671-fa9626326d10@enterprisedb.com>
Peter Eisentraut wrote:
> On 28.01.22 05:14, Victor Sudakov wrote:
> > 1. What is the meaning of those IDs in the log like
> > "S-0xaaaae460fcb0", "C-0xaaaae45d9fb0" ? I suspect that "S-" and "C-"
> > mean "server" and "client", but what are those HEX numbers?
>
> These are the internal addresses of the server and client structures.
> You can use those to track a particular server or client connection
> through the logs and through SHOW SERVERS and SHOW SERVERS.
I see. So they are probably not very useful for my task.
>
> > 2. How would you calculate the efficiency of pgbouncer, like
> > client_conns/server_conns ratio (current and average over over time)?
>
> This depends heavily on what you are using pgbouncer for and what
> metrics are relevant for your application.
The relevant metric would be the client_conns/server_conns ratio. If
there have been 1000 client connections/disconnections and they have
caused only 100 new backends to start, I'd consider it a good ratio.
The question is how to estimate it.
--
Victor Sudakov VAS4-RIPE
http://vas.tomsk.ru/
2:5005/49@fidonet
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-admin@postgresql.org
Cc: vas@sibptus.ru, pgsql-admin@lists.postgresql.org, peter.eisentraut@enterprisedb.com
Subject: Re: pgbouncer logs and its efficiency
In-Reply-To: <YfpEkSZ/TUtZRQe6@admin.sibptus.ru>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox