Message-ID: <e724e250c37c61ce3ac33eeb734e6c3f25f6db89.camel@cybertec.at>
Subject: Re: Postgres RDS DB Parameters ::INSTANCE CLASS : db.m6id.2xlarge
From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Phani Prathyush Somayajula <phani.somayajula@pragmaticplay.com>,
	"pgsql-admin@lists.postgresql.org"
	 <pgsql-admin@lists.postgresql.org>
Date: Tue, 18 Jun 2024 13:40:32 +0200
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On Tue, 2024-06-18 at 10:38 +0000, Phani Prathyush Somayajula wrote:
> I have an AWS RDS instance
> =C2=A0
> We are seeing a lot of CPU consumption where we=E2=80=99re load testing o=
ur application.
> The query which is taking a lot of time is running less than 1ms if I run=
 through
> my psql client on the server and is taking 162ms if I run it from dBeaver=
.
>=20
> I just want to analyse if the parameters that I set are optimal to the ap=
plication or not.

I don't think that twiddling the parameters will make a lot of difference t=
here.
The exception could be if you are retrieving results with a cursor; then se=
tting
"cursor_tuple_fraction" to 1 could make a difference.

Other than that, you should use auto_explain with "auto_explain.log_analyze=
 =3D on"
and "auto_explain.log_buffers =3D on" to capture an execution plan from the=
 slow
execution with DBeaver or your application.  Examining that plan should sho=
w what
is going on.

Yours,
Laurenz Albe