| From: | John Naylor <john(dot)naylor(at)2ndquadrant(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WIP: Avoid creation of the free space map for small tables |
| Date: | 2019-02-23 07:54:18 |
| Message-ID: | CACPNZCsWa=dd0K+FiODwM=LEsepAHVJCoSx2Avew=xBEX3Ywjw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Feb 21, 2019 at 9:27 PM Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> wrote:
>
> I think this test is going to break on nonstandard block sizes. While
> we don't promise that all tests work on such installs (particularly
> planner ones), it seems fairly easy to cope with this one -- just use a
> record size expressed as a fraction of current_setting('block_size').
> So instead of "1024" you'd write current_setting('block_size') / 8.
> And then display the relation size in terms of pages, not bytes, so
> divide pg_relation_size by block size.
I've done this for v6, tested on 16k block size.
--
John Naylor https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
| Attachment | Content-Type | Size |
|---|---|---|
| v6-0001-Add-more-tests-for-FSM.patch | text/x-patch | 8.1 KB |
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