Re: Can we get rid of repeated queries from pg_dump?

hubert depesz lubaczewski <depesz(at)depesz(dot)com> writes:
> On Mon, Aug 30, 2021 at 10:11:22AM -0400, Tom Lane wrote:
>> I speculate that it is collecting and then not printing the info
>> about functions that are in extensions --- can you check on
>> how many there are of those?

> classid │ count
> ─────────────────────────┼───────
> pg_type │ 31
> pg_proc │ 1729
> pg_class │ 61
> pg_foreign_data_wrapper │ 1
> pg_cast │ 30
> pg_language │ 1
> pg_opclass │ 73
> pg_operator │ 111
> pg_opfamily │ 73
> (9 rows)

Ah-hah. Those 1729 extension-owned functions account nicely
for the extra probes into pg_proc, and I bet they are causing
the unexplained getFormattedTypeName calls too. So the
*real* problem here seems to be that we're doing too much
work on objects that are not going to be dumped because they
are extension members. I'll take a look at that later if
nobody beats me to it.

regards, tom lane