| From: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
|---|---|
| To: | "Amonson, Paul D" <paul(dot)d(dot)amonson(at)intel(dot)com> |
| Cc: | David Rowley <dgrowleyml(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, "Shankaran, Akash" <akash(dot)shankaran(at)intel(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Popcount optimization using AVX512 |
| Date: | 2024-03-18 17:32:53 |
| Message-ID: | 20240318173253.GB361138@nathanxps13 |
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| Lists: | pgsql-hackers |
On Mon, Mar 18, 2024 at 05:28:32PM +0000, Amonson, Paul D wrote:
> Question: I applied the patch for the drive_popcount* functions and
> rebuilt. The resultant server complains that the function is missing.
> What is the trick to make this work?
You probably need to install the test_popcount extension and run "CREATE
EXTENION test_popcount;".
> Another Question: Is there a reason "time psql" is used over the Postgres
> "\timing" command?
I don't think there's any strong reason. I've used both.
--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com
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