Re: Speed up COPY FROM text/CSV parsing using SIMD

From: Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
To: Manni Wood <manni(dot)wood(at)enterprisedb(dot)com>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, KAZAR Ayoub <ma_kazar(at)esi(dot)dz>, Neil Conway <neil(dot)conway(at)gmail(dot)com>, 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: 2026-03-06 17:39:04
Message-ID: CAN55FZ1BYbdt97RLkd-vAVZ5EKiX=KLkhJ_S-4vgvNJRHvQZ6w@mail.gmail.com
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Hi,

On Fri, 6 Mar 2026 at 20:00, Manni Wood <manni(dot)wood(at)enterprisedb(dot)com> wrote:
>
> Hello.
>
> I ran Nazir's v11 patch on my x86 tower PC and my arm raspberry pi using the same build I've been using: meson with "debugoptimized", which translates to "-g -O2" gcc flags.

Thanks for the benchmark! The results look nice.

One question: does your benchmark include the 34dfca2934 LZ4 commit,
and is LZ4 enabled on your system?

--
Regards,
Nazir Bilal Yavuz
Microsoft

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