Horton

Re: Small optimization with expanding dynamic hash table

wenhui qiu <qiuwenhuifx@gmail.com>

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From: wenhui qiu <qiuwenhuifx@gmail.com>
To: cca5507 <cca5507@qq.com>
Cc: Rahila Syed <rahilasyed90@gmail.com>, pgsql-hackers <pgsql-hackers@lists.postgresql.org>
Date: 2025-07-11T09:33:52Z
Lists: pgsql-hackers 
Hi
> The v2 patch maybe more clear:
> We can calc bucket just by hashvalue & high_mask when expanding table
because the if condition in calc_bucket() must be false.
I think you may add a comment to this path so that code reviewers can
clearly see your optimization.

Thanks

On Thu, Jul 10, 2025 at 10:46 AM cca5507 <cca5507@qq.com> wrote:

> Hi,
>
> The v2 patch maybe more clear:
>
> We can calc bucket just by hashvalue & high_mask when expanding table
> because the if condition in calc_bucket() must be false.
>
> --
> Regards,
> ChangAo Chen
>
>