> On Thu, 14 Aug 2025 at 18:00, KAZAR Ayoub wrote:
> >> Thanks for running that benchmark! Would you mind sharing a reproducer
> >> for the regression you observed?
> >
> > Of course, I attached the sql to generate the text and csv test files.
> > If having a 1/3 of line length of special characte
On 2025-08-19 Tu 10:14 AM, Nazir Bilal Yavuz wrote:
Hi,
On Tue, 19 Aug 2025 at 15:33, Nazir Bilal Yavuz wrote:
I am able to reproduce the regression you mentioned but both
regressions are %20 on my end. I found that (by experimenting) SIMD
causes a regression if it advances less than 5 chara
Hi,
On Tue, 19 Aug 2025 at 15:33, Nazir Bilal Yavuz wrote:
>
> I am able to reproduce the regression you mentioned but both
> regressions are %20 on my end. I found that (by experimenting) SIMD
> causes a regression if it advances less than 5 characters.
>
> So, I implemented a small heuristic. I
Hi,
On Thu, 14 Aug 2025 at 18:00, KAZAR Ayoub wrote:
>> Thanks for running that benchmark! Would you mind sharing a reproducer
>> for the regression you observed?
>
> Of course, I attached the sql to generate the text and csv test files.
> If having a 1/3 of line length of special characters can
On Thu, 7 Aug 2025 at 14:15, Nazir Bilal Yavuz wrote:
> I have a couple of ideas that I was working on:
> ---
>
> + * However, SIMD optimization cannot be applied in the following
> cases:
> + * - Inside quoted fields, where escape sequences and closing quotes
> + * requ
> Hi,
>
> On Thu, 14 Aug 2025 at 05:25, KAZAR Ayoub wrote:
> >
> > Following Nazir's findings about 4096 bytes being the performant line
> length, I did more benchmarks from my side on both TEXT and CSV formats
> with two different cases of normal data (no special characters) and data
> with many
Hi,
On Thu, 14 Aug 2025 at 05:25, KAZAR Ayoub wrote:
>
> Following Nazir's findings about 4096 bytes being the performant line length,
> I did more benchmarks from my side on both TEXT and CSV formats with two
> different cases of normal data (no special characters) and data with many
> specia
Following Nazir's findings about 4096 bytes being the performant line
length, I did more benchmarks from my side on both TEXT and CSV formats
with two different cases of normal data (no special characters) and data
with many special characters.
Results are con good as expected and similar to previ
On Tue, Aug 12, 2025 at 4:25 PM Shinya Kato wrote:
> > + * However, SIMD optimization cannot be applied in the following
> > cases:
> > + * - Inside quoted fields, where escape sequences and closing
> > quotes
> > + * require sequential processing to handle correctly.
On Thu, Aug 7, 2025 at 8:15 PM Nazir Bilal Yavuz wrote:
>
> Hi,
>
> Thank you for working on this!
>
> On Thu, 7 Aug 2025 at 04:49, Shinya Kato wrote:
> >
> > Hi hackers,
> >
> > I have implemented SIMD optimization for the COPY FROM (FORMAT {csv,
> > text}) command and observed approximately a 5
Hi,
On Thu, 7 Aug 2025 at 14:15, Nazir Bilal Yavuz wrote:
>
> On Thu, 7 Aug 2025 at 04:49, Shinya Kato wrote:
> >
> > I have implemented SIMD optimization for the COPY FROM (FORMAT {csv,
> > text}) command and observed approximately a 5% performance
> > improvement. Please see the detailed test
Hi,
Thank you for working on this!
On Thu, 7 Aug 2025 at 04:49, Shinya Kato wrote:
>
> Hi hackers,
>
> I have implemented SIMD optimization for the COPY FROM (FORMAT {csv,
> text}) command and observed approximately a 5% performance
> improvement. Please see the detailed test results below.
I h
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