Hi
On 2019-07-17 13:55:51 -0400, Alvaro Herrera wrote:
> Be careful with pg_buffercache though, as it can cause a hiccup in
> operation.
I think that's been fixed a few years back:
commit 6e654546fb61f62cc982d0c8f62241b3b30e7ef8
Author: Heikki Linnakangas <heikki.linnakangas@xxxxxx>
Date: 2016-09-29 13:16:30 +0300
Don't bother to lock bufmgr partitions in pg_buffercache.
That makes the view a lot less disruptive to use on a production system.
Without the locks, you don't get a consistent snapshot across all buffers,
but that's OK. It wasn't a very useful guarantee in practice.
Ivan Kartyshov, reviewed by Tomas Vondra and Robert Haas.
Discusssion: <f9d6cab2-73a7-7a84-55a8-07dcb8516ae5@xxxxxxxxxxxxxx>
so everything from 10 onwards ought to be fine.
Greetings,
Andres Freund
