| From: | Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com> |
|---|---|
| To: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
| Cc: | Manni Wood <manni(dot)wood(at)enterprisedb(dot)com>, KAZAR Ayoub <ma_kazar(at)esi(dot)dz>, Neil Conway <neil(dot)conway(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Shinya Kato <shinya11(dot)kato(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Speed up COPY FROM text/CSV parsing using SIMD |
| Date: | 2026-03-11 19:22:18 |
| Message-ID: | CAN55FZ0yfETy4UEA5rOJ9S06JSOtiWF8TW_+yi3yjVAcrLqKLA@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi,
On Wed, 11 Mar 2026 at 22:02, Nathan Bossart <nathandbossart(at)gmail(dot)com> wrote:
>
> On Wed, Mar 11, 2026 at 09:49:22PM +0300, Nazir Bilal Yavuz wrote:
> > That is what v13-0002 does. I saw 1%-2% speedups with this change and
> > there was no regression.
>
> Thanks for the explanation. Is there any reason _not_ to add this to 0001?
I noticed this improvement today. To make it easier to review for
anyone who may have already started looking at v12, I attached the new
functional code changes as 0002. There was no other reason.
Here is v14 which is v13-0001 + v13-0002.
--
Regards,
Nazir Bilal Yavuz
Microsoft
| Attachment | Content-Type | Size |
|---|---|---|
| v14-0001-Speed-up-COPY-FROM-text-CSV-parsing-using-SIMD.patch | text/x-patch | 9.8 KB |
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