| From: | Rob Sargent <robjsargent(at)gmail(dot)com> |
|---|---|
| To: | Ellen Allhatatlan <ellenallhatatlan(at)gmail(dot)com> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: MVCC and all that... |
| Date: | 2025-09-09 16:40:50 |
| Message-ID: | C1E6A3DC-C13C-4051-AE27-10E83E42AA8E@gmail.com |
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| Lists: | pgsql-general |
> On Sep 9, 2025, at 10:27 AM, Ellen Allhatatlan <ellenallhatatlan(at)gmail(dot)com> wrote:
>
> Reading this article
> https://firebirdsql.org/migrating-from-firebird-to-postgresql-what-can-go-wrong-
> I'm a bit confused (not the first time...)
>
> In part 1. Differences in MVCC implementation - he's saying that "It’s
> not that the PostgreSQL implementation of MVCC is bad — it’s just
> fundamentally different"
>
> But, I thought Firebird had SWEEP instead of VACUUM (how much closer
> can the words be?) and that FB's implementation of MVCC was
> essentially similar.
> Is this correct? Then why is he pointing out the performance diffs
> because of MVCC? I'm puzzled!
>
>
> --
>
> El!
>
It is written by someone @firebirdsql.org so one assumes a few grains of salt necessary.
>
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