Horton

Re: Summary function for pg_buffercache

Nathan Bossart <nathandbossart@gmail.com>

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From: Nathan Bossart <nathandbossart@gmail.com>
To: Aleksander Alekseev <aleksander@timescale.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>, Melih Mutlu <m.melihmutlu@gmail.com>
Date: 2022-09-09T17:23:11Z
Lists: pgsql-hackers 
On Fri, Sep 09, 2022 at 05:36:45PM +0300, Aleksander Alekseev wrote:
> However I'm afraid you can't examine BufferDesc's without taking
> locks. This is explicitly stated in buf_internals.h:

Yeah, when I glanced at this patch earlier, I wondered about this.

> I suggest we focus on saving the memory first and then think about the
> performance, if necessary.

+1

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

Commits

  1. pg_buffercache: Add pg_buffercache_summary()

  2. Revert 56-bit relfilenode change and follow-up commits.