From: Andreas Joseph Krogh <andreas@visena.com>
To: pgsql-performance@lists.postgresql.org
Subject: Sv: Would SSD improve Index Only Scan performance by a lot?
Date: Wed, 9 Oct 2019 01:42:26 +0200 (CEST)
Message-ID: <VisenaEmail.0.be1ddf58563b9542.16dadbe454a@tc7-visena> (raw)
In-Reply-To: <CAFoK1axtgKBb-K4ssJ5fiAZgX=abX2Eq-e0m+zXfFifNyg0P5g@mail.gmail.com>
På onsdag 09. oktober 2019 kl. 01:37:06, skrev Arya F <arya6000@gmail.com
<mailto:arya6000@gmail.com>>: As my table has gotten bigger, it takes longer to
get a single row back when querying a row by its btree index. Right now the
database is running on a traditional HDD. SSDs have a much faster seek time
than traditional HDDs. Would switching to an SSD improve "Index Only Scan" time
greatly? by at least 3-4 times? It depends on whether the index is accessed
often or not (wrt. caching), and (of course) the size of the index, but yes -
"cold access" to the index (or persistent data in general) ismuch faster with
SSD. -- Andreas Joseph Krogh CTO / Partner - Visena AS Mobile: +47 909 56 963
andreas@visena.com <mailto:andreas@visena.com> www.visena.com
<https://www.visena.com; <https://www.visena.com;
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: andreas@visena.com, pgsql-performance@lists.postgresql.org
Subject: Re: Sv: Would SSD improve Index Only Scan performance by a lot?
In-Reply-To: <VisenaEmail.0.be1ddf58563b9542.16dadbe454a@tc7-visena>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox