| From: | hubert depesz lubaczewski <depesz(at)depesz(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, pgsql-general <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Can we get rid of repeated queries from pg_dump? |
| Date: | 2021-08-28 06:38:24 |
| Message-ID: | 20210828063824.GA11579@depesz.com |
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| Lists: | pgsql-general pgsql-hackers |
On Fri, Aug 27, 2021 at 05:23:23PM -0400, Tom Lane wrote:
> I experimented with the attached, very quick-n-dirty patch to collect
> format_type results during the initial scan of pg_type, instead. On the
> regression database in HEAD, it reduces the number of queries pg_dump
> issues from 3260 to 2905; but I'm having a hard time detecting any net
> performance change.
> (This is not meant for commit as-is; notably, I didn't bother to fix
> getTypes' code paths for pre-9.6 servers. It should be fine for
> performance testing though.)
Hi,
thanks a lot for this. Will test and report back, most likely on Monday,
though.
Best regards,
depesz
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