Re: Summary function for pg_buffercache

Aleksander Alekseev <aleksander@timescale.com>

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From: Aleksander Alekseev <aleksander@timescale.com>

To: Nathan Bossart <nathandbossart@gmail.com>

Cc: pgsql-hackers <pgsql-hackers@postgresql.org>, Melih Mutlu <m.melihmutlu@gmail.com>

Date: 2022-09-09T21:14:33Z

Lists: pgsql-hackers

Attachments

v4-0001-Added-pg_buffercache_summary-function.patch (application/octet-stream) patch v4-0001

Hi hackers,

> > I suggest we focus on saving the memory first and then think about the
> > performance, if necessary.
>
> +1

I made a mistake in v3 cfbot complained about. It should have been:

```
if (RelFileNumberIsValid(BufTagGetRelNumber(&bufHdr->tag)))
```

Here is the corrected patch.

-- 
Best regards,
Aleksander Alekseev

Commits

pg_buffercache: Add pg_buffercache_summary()
- 2589434ae0fb 16.0 landed
Revert 56-bit relfilenode change and follow-up commits.
- a448e49bcbe4 16.0 cited