Re: monitoring usage count distribution

Nathan Bossart <nathandbossart@gmail.com>

From: Nathan Bossart <nathandbossart@gmail.com>
To: Andres Freund <andres@anarazel.de>
Cc: Robert Haas <robertmhaas@gmail.com>, pgsql-hackers@postgresql.org, schneider@ardentperf.com
Date: 2023-04-05T19:41:01Z
Lists: pgsql-hackers
On Wed, Apr 05, 2023 at 12:09:21PM -0700, Andres Freund wrote:
> I would not mind having a separate function returning 6 rows, if we really
> want that, but making pg_buffercache_summary() return 6 rows would imo make it
> less useful for getting a quick overview. At least I am not that quick summing
> up multple rows, just to get a quick overview over the number of dirty rows.

This is what v1-0001 does.  We could probably make pg_buffercache_summary a
view on pg_buffercache_usage_counts, too, but that doesn't strike me as
tremendously important.

-- 
Nathan Bossart
Amazon Web Services: https://aws.amazon.com



Commits

  1. Add pg_buffercache_usage_counts() to contrib/pg_buffercache.