| From: | David Rowley <dgrowleyml(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Robert Haas <robertmhaas(at)gmail(dot)com>, Yura Sokolov <y(dot)sokolov(at)postgrespro(dot)ru>, PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Reducing the chunk header sizes on all memory context types |
| Date: | 2022-09-05 13:41:55 |
| Message-ID: | CAApHDvopbjBKHNOY5VADMgQF2v9aud3eAXh2TNPOnX26=7of7Q@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, 2 Sept 2022 at 20:11, David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
>
> On Thu, 1 Sept 2022 at 12:46, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> >
> > David Rowley <dgrowleyml(at)gmail(dot)com> writes:
> > > Maybe we should just consider always making room for a sentinel for
> > > chunks that are on dedicated blocks. At most that's an extra 8 bytes
> > > in some allocation that's either over 1024 or 8192 (depending on
> > > maxBlockSize).
> >
> > Agreed, if we're not doing that already then we should.
>
> Here's a patch to that effect.
If there are no objections, then I plan to push that patch soon.
David
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