| From: | Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com> |
|---|---|
| To: | Manni Wood <manni(dot)wood(at)enterprisedb(dot)com> |
| Cc: | KAZAR Ayoub <ma_kazar(at)esi(dot)dz>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, 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: | 2026-02-20 09:50:35 |
| Message-ID: | CAN55FZ2DT4-k06umn=7NYG+NoM6gnVJVQCCwRrr2qOraO+Jadw@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi,
On Fri, 20 Feb 2026 at 03:09, Manni Wood <manni(dot)wood(at)enterprisedb(dot)com> wrote:
>
> Thanks for running benchmarks, Ayoub.
>
> Nazir, I ran my benchmarks with more rows this time --- as many rows as would fit on my test computers without exhausting their RAM disks. That seems to have brought things more into line with what Ayoub saw. I did get some small regressions, but I suspect those are not a big deal. (For instance, on both machines I also noticed the occasional "truncate table" would take longer than the others, despite my scripts' best efforts to steady a CPU core and pin postmaster and children to that core.)
Thank you both for the benchmarks. Results look good to me!
--
Regards,
Nazir Bilal Yavuz
Microsoft
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