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

On Wed, Mar 11, 2026 at 2:10 PM Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
wrote:

> Hi,
>
> On Wed, 11 Mar 2026 at 15:19, KAZAR Ayoub <ma_kazar(at)esi(dot)dz> wrote:
> >
> > On Wed, Mar 11, 2026, 12:36 PM Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
> wrote:
> >>
> >> 0002 has an attempt to remove some branches from SIMD code but since
> >> it is kind of functional change, I wanted to attach that as another
> >> patch. I think we can apply some parts of this, if not all.
> >
> > 0002 sounds really good to have, haven't measured the diff but it's very
> logical.
>
> I agree with you. I saw very small speedups like 1%-2% but I think
> changes make sense regardless of the performance improvement.

>
> > Another quick question though, do we need USE_NO_SIMD for any reason? I
> just remembered that there's some simd paths like json that don't use it.
>
> vector8_eq() and vector8_highbit_mask() don't have non-SIMD
> implementations, so we need to use USE_NO_SIMD.
>
Aha ! that's true, thanks.

Regards,
Ayoub