Re: Speed up COPY FROM text/CSV parsing using SIMD - Mailing list pgsql-hackers

Hi,

On Sat, 7 Mar 2026 at 02:31, KAZAR Ayoub <ma_kazar@esi.dz> wrote:
>
> On Sat, Mar 7, 2026 at 12:13 AM Nathan Bossart <nathandbossart@gmail.com> wrote:
>>
>> On Fri, Mar 06, 2026 at 03:25:46PM -0600, Manni Wood wrote:
>> > Well, golly! Look at these numbers. Old master with no lz4, your v11 patch
>> > with no lz4, and then your v11 patch with lz4 compiled in.
>>
>> I'm appreciative of all the benchmarking that you and others are doing, but
>> wouldn't we be more interested in the difference between "old master with
>> lz4" and "v11 with lz4"?  Else, we have multiple variables in play.
>
> Yes I agree because the lz4 effect doesn't prove anything for the SIMD patch itself right ? So basically a comparison
forthe SIMD effect should be "master with/out lz4 vs patched with/out lz4, respectively and nothing more!", is this
correct? 

Yes, I think 'master with/out lz4 vs patched with/out lz4,
respectively' is enough to determine the effect of the SIMD patch.

--
Regards,
Nazir Bilal Yavuz
Microsoft