| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Make ringbuffer threshold and ringbuffer sizes configurable? |
| Date: | 2020-02-06 18:15:04 |
| Message-ID: | CA+TgmoYA3dqs5e1GnTLrHNGYe7dWsNyyi7f-sWjuVfYh=Fh-yQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Feb 5, 2020 at 11:00 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> I.e. to maintain the current defaults, seqscan_ringbuffer_threshold
> would be -4.0, but could be also be set to an absolute 4GB (converted to
> pages). Probably would want a GUC show function that displays
> proportional values in a nice way.
I think this is kind of awkward given that our GUC system attributes
units to everything. It'd sort of be nicer to have two separate GUCs,
one measured as a multiple and the other measured in bytes, but maybe
that's just exchanging one form of confusion for another.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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