From: Justin Pryzby <pryzby@telsasoft.com>
To: Laurent Hasson <ldh@laurent-hasson.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Big performance slowdown from 11.2 to 13.3
Date: Wed, 21 Jul 2021 14:15:28 -0500
Message-ID: <20210721191528.GC19620@telsasoft.com> (raw)
In-Reply-To: <MN2PR15MB25601E80A9B6D1BA6F592B1985E39@MN2PR15MB2560.namprd15.prod.outlook.com>
References: <MN2PR15MB25601E80A9B6D1BA6F592B1985E39@MN2PR15MB2560.namprd15.prod.outlook.com>
On Wed, Jul 21, 2021 at 06:50:58PM +0000, ldh@laurent-hasson.com wrote:
> The plans are pretty much identical too. I checked line by line and couldn't see anything much different (note that I have a view over this query). Here is the V13 version of the plan:
> I am out of my wits as to what is causing such a massive slowdown and how I could fix it.
>
> Any idea out there?
Could you send the "explain (analyze,buffers,settings) for query on the v11 and
v13 instances ?
Or a link to the execution plan pasted into explain.depesz.com.
https://wiki.postgresql.org/wiki/Slow_Query_Questions#EXPLAIN_.28ANALYZE.2C_BUFFERS.29.2C_not_just_E...
It might be good to check using a copy of your data that there's no regression
between 11.2 and 11.12.
--
Justin
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To: pgsql-performance@postgresql.org
Cc: pryzby@telsasoft.com, ldh@laurent-hasson.com
Subject: Re: Big performance slowdown from 11.2 to 13.3
In-Reply-To: <20210721191528.GC19620@telsasoft.com>
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