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

From KAZAR Ayoub
Subject Re: Speed up COPY FROM text/CSV parsing using SIMD
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Msg-id CA+K2RunT=1P7_E4jrZMogDiPunNCOGw9P_UHLaJRJk=5_odKmA@mail.gmail.com
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In response to Re: Speed up COPY FROM text/CSV parsing using SIMD  (Nathan Bossart <nathandbossart@gmail.com>)
Responses Re: Speed up COPY FROM text/CSV parsing using SIMD
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Hi,

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 for the SIMD effect should be "master with/out lz4 vs patched with/out lz4, respectively and nothing more!", is this correct ? 

Regards,
Ayoub

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