| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, David Rowley <dgrowleyml(at)gmail(dot)com>, 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: | 2022-08-29 16:00:04 |
| Message-ID: | 3213777.1661788804@sss.pgh.pa.us |
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Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2022-08-29 11:43:14 -0400, Tom Lane wrote:
>> I think adding a padding field to SlabBlock would be a less messy
>> solution than your patch.
> That just seems to invite the same problem happening again later and it's
> harder to ensure that the padding is correct across platforms.
Yeah, I just tried and failed to write a general padding computation
--- you can't use sizeof() in the #if, which makes it a lot more
fragile than I was expecting. Tomas' way is probably the best.
regards, tom lane
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