| From: | KAZAR Ayoub <ma_kazar(at)esi(dot)dz> |
|---|---|
| To: | Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com> |
| Cc: | Nathan Bossart <nathandbossart(at)gmail(dot)com>, Manni Wood <manni(dot)wood(at)enterprisedb(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: | 2026-02-26 14:31:30 |
| Message-ID: | CA+K2RumuFAk7tCqeXjTNLDsQ8ZKX3MMQTraaB1ttM8E_Aq3dLg@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hello,
On Thu, Feb 26, 2026 at 1:19 PM Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
wrote:
> Hi,
>
> On Wed, 25 Feb 2026 at 17:24, Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
> wrote:
> >
> > I agree with you. However, unfortunately, I see regression on master +
> > v10 compared to REL_18_3 (62d6c7d3df6).
> >
> > Thank you Kazar and Manni for benchmarks in [1] and [2]!
>
> Kazar and Manni, if possible could you please share the build commands
> you use? I see regressions for an inlining patch (dc592a4155) too when
> I build postgres with -O2.
>
> My build commands are:
>
> -O2: meson setup buildtype=debugoptimized ...
>
> -O3: meson setup buildtype=release ...
All my builds are with CFLAGS='-O2 -g'
Regards,
Ayoub
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