Re: Reduce memory overheads for storing a Memoize tuple

> On Aug 5, 2026, at 13:23, David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
>
> On Mon, 3 Aug 2026 at 16:52, Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com> wrote:
>> The optimized data structure looks good to me. The test result on my side exactly matches yours: 3583kB vs. 2801kB. I had to turn off hash join, otherwise the planner always chose a parallel hash join.
>
> Thanks for looking and checking.
>
>> I have only one nitpick. MAXALIGN(sizeof(MinimalTuple)) appears 4 times. Would it make sense to define a macro for it, say MEMOIZE_TUPLE_LINK_SIZE?
>
> Good idea. Here's a new patch with that adjustment made.
>
> David
> <v2-0001-Reduce-memory-overheads-for-storing-a-Memoize-tup.patch>

V2 LGTM. I also reran the tests, everything is good.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/