| From: | "Malladi, Rama" <rvmallad(at)amazon(dot)com> |
|---|---|
| To: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | "Dipietro, Salvatore" <dipiets(at)amazon(dot)co(dot)uk>, "nathandbossart(at)gmail(dot)com" <nathandbossart(at)gmail(dot)com>, "Malladi, Rama" <rvmallad(at)amazon(dot)com> |
| Subject: | [PATCH] SVE popcount support |
| Date: | 2024-11-27 15:43:27 |
| Message-ID: | 010101936e4aaa70-b474ab9e-b9ce-474d-a3ba-a3dc223d295c-000000@us-west-2.amazonses.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Attachments protected by Amazon:
[0001-SVE-popcount-support.patch]
https://us-west-2.secure-attach.amazon.com/a29c9ff9-1f9b-430f-9b3c-07fde9a419aa/f9178627-0600-4527-bc5c-7e4cb9ef6e9a
[SVE-popcount-support-PostgreSQL.png]
https://us-west-2.secure-attach.amazon.com/a29c9ff9-1f9b-430f-9b3c-07fde9a419aa/13c252c4-c45e-447c-9e55-fe637f8d345c
Amazon has replaced the attachments in this email with download links. Downloads will be available until December 27, 2024, 15:43 (UTC+00:00).
[Tell us what you think] https://amazonexteu.qualtrics.com/jfe/form/SV_ehuz6zGo8YnsRKK
[For more information click here] https://docs.secure-attach.amazon.com/guide
Please find attached a patch to PostgreSQL implementing SVE popcount. I used John Naylor's test_popcount module [0] to put together the attached graphs. This test didn't show any regressions with a relatively small number of bytes, and it showed the expected improvements with many bytes.
[0] https://postgr.es/m/CAFBsxsE7otwnfA36Ly44zZO+b7AEWHRFANxR1h1kxveEV=ghLQ@mail.gmail.com
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