From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Hugh Ranalli <hugh@whtc.ca>
Cc: Justin Pryzby <pryzby@telsasoft.com>
Cc: pgsql-performance@lists.postgresql.org
Subject: Re: Perplexing, regular decline in performance
Date: Wed, 26 Jun 2019 15:07:43 -0400
Message-ID: <20190626190743.GA15026@alvherre.pgsql> (raw)
In-Reply-To: <CAAhbUMPVgOyiTBDU-b9MaoixDEU3jZB4s63QrpefzGtLVbtKOw@mail.gmail.com>
On 2019-Jun-26, Hugh Ranalli wrote:
> From my research in preparing for the upgrade, I understood transparent
> huge pages were a good thing, and should be enabled. Is this not correct?
It is not.
> Wouldn't the plan be the same at both
> the start of the week (when the problematic table is essentially empty) and
> at the end (when it is much larger)?
Not necessarily. Though, if a plan change was the culprit you would
probably see a sudden change in performance characteristics rather than
gradual. Worth making sure, anyway.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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: alvherre@2ndquadrant.com, hugh@whtc.ca, pryzby@telsasoft.com, pgsql-performance@lists.postgresql.org
Subject: Re: Perplexing, regular decline in performance
In-Reply-To: <20190626190743.GA15026@alvherre.pgsql>
* 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