Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tzJo4-000jS5-KM for pgsql-general@arkaria.postgresql.org; Mon, 31 Mar 2025 18:24:20 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1tzJo3-00ABI3-B5 for pgsql-general@arkaria.postgresql.org; Mon, 31 Mar 2025 18:24:19 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tzJo2-00ABEt-W9 for pgsql-general@lists.postgresql.org; Mon, 31 Mar 2025 18:24:19 +0000 Received: from smtp107.iad3b.emailsrvr.com ([146.20.161.107]) by makus.postgresql.org with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tzJo1-002BgG-0r for pgsql-general@lists.postgresql.org; Mon, 31 Mar 2025 18:24:17 +0000 X-Auth-ID: xof@thebuild.com Received: by smtp6.relay.iad3b.emailsrvr.com (Authenticated sender: xof-AT-thebuild.com) with ESMTPSA id 5792B2017A; Mon, 31 Mar 2025 14:24:16 -0400 (EDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3776.700.51.11.1\)) Subject: Re: [EXTERNAL] RDS IO Read time From: Christophe Pettus In-Reply-To: Date: Mon, 31 Mar 2025 11:23:45 -0700 Cc: "pgsql-general@lists.postgresql.org" Content-Transfer-Encoding: quoted-printable Message-Id: References: To: Eden Aharoni X-Mailer: Apple Mail (2.3776.700.51.11.1) X-Classification-ID: 6f1a272a-a384-4445-8387-17c3e37a330a-1-1 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk > On Mar 31, 2025, at 10:54, Eden Aharoni = wrote: >=20 > So you believe it's strictly an EBS issue? Well, PostgreSQL certainly can read faster than 34MB/s off of disk. = With the data you've given, I can't really say if it's purely an EBS = issue.=