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help / color / mirror / Atom feedFrom: Nazir Bilal Yavuz <[email protected]>
To: KAZAR Ayoub <[email protected]>
Cc: Nathan Bossart <[email protected]>
Cc: Manni Wood <[email protected]>
Cc: Andrew Dunstan <[email protected]>
Cc: Neil Conway <[email protected]>
Cc: Shinya Kato <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: Speed up COPY FROM text/CSV parsing using SIMD
Date: Sun, 8 Mar 2026 13:31:32 +0300
Message-ID: <CAN55FZ1k2sOZn1qkDDVTX8Z1t99ZUkywBhdp_43euDHaAi5bRA@mail.gmail.com> (raw)
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Hi,
On Sat, 7 Mar 2026 at 02:31, KAZAR Ayoub <[email protected]> wrote:
>
> On Sat, Mar 7, 2026 at 12:13 AM Nathan Bossart <[email protected]> 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 ?
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
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To: [email protected]
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Subject: Re: Speed up COPY FROM text/CSV parsing using SIMD
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