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From: Alena Rybakina <[email protected]>
To: Alexander Korotkov <[email protected]>
Cc: Jim Nasby <[email protected]>
Cc: Andrei Zubkov <[email protected]>
Cc: Masahiko Sawada <[email protected]>
Cc: Melanie Plageman <[email protected]>
Cc: jian he <[email protected]>
Cc: pgsql-hackers <[email protected]>
Cc: [email protected]
Subject: Re: Vacuum statistics
Date: Mon, 13 Jan 2025 14:29:31 +0300
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
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On 10.01.2025 17:51, Alena Rybakina wrote:
>
> Hi! I thought about this problem again and I think I have a solution.
>
> On 02.12.2024 23:12, Alena Rybakina wrote:
>>> * I've read the previous discussion on how important to keep all these
>>> fields regarding vacuum statistics including points by Andrei and Jim.
>>> It still worrying me that statistics volume is going to burst in about
>>> 3 times, but I don't have a particular proposal on how to make more
>>> granular approach.  I wonder if you could propose something.
> We can collect statistics on databases at all times - there are less 
> compared to vacuum statistics of relations, but they can give enough 
> information that can hint that something is going wrong.
> With the track_vacuum_statistics guc we can cover cases of collecting 
> extended and complete information: when it is enabled, we will collect 
> vacuum statistics on relations both: heaps and indexes.
> This will not lead to a synchronicity between constant database 
> statistics and temporary statistics of relations, since our vacuum 
> statistics are cumulative and it is assumed that we will look at 
> changes in statistics over a certain period.
> What do you think?

I implemented this in my latest patch version [0].

[0] 
https://www.postgresql.org/message-id/1e81a0a1-a63b-48fb-905a-d6495f89ab73%40postgrespro.ru

-- 
Regards,
Alena Rybakina
Postgres Professional


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