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From: Ranier Vilela <ranier.vf@gmail.com>
Date: Mon, 23 Mar 2026 08:12:08 -0300
Message-ID: 
 <CAEudQArStWAwxLM6ORNo2YtJ=Uw-MNRv9B-k_gQ6O=yt=7GtAA@mail.gmail.com>
Subject: Re: Avoid multiple calls to memcpy (src/backend/access/index/genam.c)
To: lakshmi <lakshmigcdac@gmail.com>
Cc: Bryan Green <dbryan.green@gmail.com>,
 Pg Hackers <pgsql-hackers@postgresql.org>
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Hi.

Em seg., 23 de mar. de 2026 =C3=A0s 01:42, lakshmi <lakshmigcdac@gmail.com>
escreveu:

> Hi,
>
> Thanks for the reply.
>
> Here are the details of my test setup.
>
> I ran the tests on Debian Linux (6.1.0-10-amd64, x86_64) on an AMD Ryzen =
5
> 7535U (6 cores / 12 threads).
>
Thanks for the tests.

>
> The PostgreSQL version was 19devel, built from source using gcc 12.2.0
> with enable-debug.
>
> For benchmarking, I used pgbench with the following command:
> pgbench -p 55432 -d postgres -c 10 -j 4 -T 60
>
> The database was initialized with scale factor 1 (pgbench -i). I ran
> multiple iterations for both the original and patched versions and compar=
ed
> TPS and latency across runs.
>
> All tests were done on the same system under similar conditions.
>
> Please let me know if you=E2=80=99d like me to try any other scenarios or=
 provide
> more details.
>
Could you repeat the tests without enable-debug?

best regards,
Ranier Vilela

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<div dir=3D"ltr"><div>Hi.</div><br><div class=3D"gmail_quote gmail_quote_co=
ntainer"><div dir=3D"ltr" class=3D"gmail_attr">Em seg., 23 de mar. de 2026 =
=C3=A0s 01:42, lakshmi &lt;<a href=3D"mailto:lakshmigcdac@gmail.com">lakshm=
igcdac@gmail.com</a>&gt; escreveu:<br></div><blockquote class=3D"gmail_quot=
e" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204)=
;padding-left:1ex"><div dir=3D"ltr">Hi,<br><br>Thanks for the reply.<br><br=
>Here are the details of my test setup.<br><br>I ran the tests on Debian Li=
nux (6.1.0-10-amd64, x86_64) on an AMD Ryzen 5 7535U (6 cores / 12 threads)=
.<br></div></blockquote><div>Thanks for the tests.=C2=A0</div><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px soli=
d rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><br>The PostgreSQL ve=
rsion was 19devel, built from source using gcc 12.2.0 with enable-debug.<br=
><br>For benchmarking, I used pgbench with the following command:<br>pgbenc=
h -p 55432 -d postgres -c 10 -j 4 -T 60<br><br>The database was initialized=
 with scale factor 1 (pgbench -i). I ran multiple iterations for both the o=
riginal and patched versions and compared TPS and latency across runs.<br><=
br>All tests were done on the same system under similar conditions.<br><br>=
Please let me know if you=E2=80=99d like me to try any other scenarios or p=
rovide more details.<br></div></blockquote><div>Could you repeat the tests =
without enable-debug?</div><div><br></div><div>best regards,</div><div>Rani=
er Vilela</div></div></div>

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