Horton

Re: Make MemoryContextMemAllocated() more precise

Jeff Davis <pgsql@j-davis.com>

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From: Jeff Davis <pgsql@j-davis.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>, Tomas Vondra <tomas.vondra@postgresql.org>
Date: 2020-03-19T20:16:26Z
Lists: pgsql-hackers 
On Thu, 2020-03-19 at 16:04 -0400, Robert Haas wrote:
> Other people may have different concerns, but that was the only thing
> that was bothering me.

OK, thank you for raising it.

Perhaps we can re-fix the issue for HashAgg if necessary, or I can
tweak some accounting things within HashAgg itself, or both.

Regards,
	Jeff Davis

Commits

  1. Create memory context for HashAgg with a reasonable maxBlockSize.

  2. Specialize MemoryContextMemAllocated().