=?UTF-8?Q?Filip_Rembia=C5=82kowski?= <filip.rembialkowski@gmail.com> writes:
> A table has a trigger.
> The trigger sends a NOTIFY.
> Test with COPY FROM shows non-linear correlation between number of inserted
> rows and COPY duration.
No surprise, see AsyncExistsPendingNotify. You would have a lot of other
performance issues with sending hundreds of thousands of distinct notify
events from one transaction anyway, so I can't get terribly excited about
this.
regards, tom lane