Hans Braxmeier <hans.braxmeier@outlook.com> writes:
> After restarting postgres (even with a new cluster) and creating a new database, postgres is hanging while extracting
thedump: gunzip -c pixabay.gz | psql pixabay
> The log file shows that the autovacuum task is running (almost) endless...
> 2017-07-12 18:05:52.367 CEST [19586] hans@pixabay LOG: duration: 11.609 ms statement: CREATE INDEX
photos_indexphoto_createdON photos_indexphoto USING btree (created);
> 2017-07-12 20:34:58.943 CEST [19626] ERROR: canceling autovacuum task
> 2017-07-12 20:34:58.943 CEST [19626] CONTEXT: automatic analyze of table "pixabay.public.photos_photo"
> 2017-07-12 20:34:59.942 CEST [19586] hans@pixabay LOG: duration: 8947575.013 ms statement: CREATE INDEX
photos_photo_approved_by_idON photos_photo USING btree (approved_by_id);
What that looks like is it took the system an unusually long time to
notice that it needed to cancel the autovacuum to avoid a deadlock
with the CREATE INDEX. Was either process consuming a noticeable
amount of CPU during that interval? Do you have deadlock_timeout
set higher than the default 1s?
regards, tom lane