| From: | Michael Paquier <michael(at)paquier(dot)xyz> |
|---|---|
| To: | John Naylor <johncnaylorls(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: get rid of RM_HEAP2_ID |
| Date: | 2025-10-10 02:46:53 |
| Message-ID: | aOhznflGkNKQ4Mho@paquier.xyz |
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| Lists: | pgsql-hackers |
On Thu, Oct 09, 2025 at 03:15:11PM +0700, John Naylor wrote:
> Leaving that up to the rmgr makes sense. One consideration I didn't
> mention was for xlogstats.c -- "record_stats[rmid][recid]" would get
> 16x larger if recid could take up the full byte. Maybe that's
> harmless, but I didn't want to assume. Any thoughts on that?
I've missed this interaction, thanks for mentioning it. XLogStats is
a local state that's only used by pg_walinspect and pg_waldump, so
this extra memory consumed does worry me much; this stuff interacts
with no critical paths.
--
Michael
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