Re: Add 64-bit XIDs into PostgreSQL 15 - Mailing list pgsql-hackers

From wenhui qiu
Subject Re: Add 64-bit XIDs into PostgreSQL 15
Date
Msg-id CAGjGUAKEF5j2_7scMkhBW0KdLif9xDbbg4EQkW6+1CtRWz-sww@mail.gmail.com
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In response to Re: Add 64-bit XIDs into PostgreSQL 15  (Peter Eisentraut <peter@eisentraut.org>)
List pgsql-hackers
Maybe a setting similar to max_wal_size could be better for that?
+1

Thanks 

Peter Eisentraut <peter@eisentraut.org> 于2024年7月25日周四 21:31写道:
On 25.07.24 13:09, Heikki Linnakangas wrote:
>> However, if there is no more disaster threshold at 2^31, what is the
>> guidance for setting these?  Or more radically, why even run
>> transaction-count-based vacuum at all?
>
> To allow the CLOG to be truncated. There's no disaster anymore, but
> without freezing, the clog will grow indefinitely.

Maybe a setting similar to max_wal_size could be better for that?



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