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help / color / mirror / Atom feedFrom: 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: Fri, 10 Jan 2025 17:51:10 +0300
Message-ID: <[email protected]> (raw)
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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?
--
Regards,
Alena Rybakina
Postgres Professional
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