Re: [proposal] pg_stat_statements: extension timing instrumentation

An other way is to use "waits" reporting ...
something like :

pgss_store (...)
pgstat_report_wait_start(PG_WAIT_EXTENSION);
...
pgstat_report_wait_end();

gives waits of type "Extension", name "Extension" when spending time in this
part of pgss.

This can help those working with waits sampling
as found in pg_stat_activity, pg_wait_sampling or pgsentinel.

note: some of the contentions are already reported as "LWLock" /
"pg_stat_statements"

Regards
PAscal

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