"Tomas Vondra" <tv@xxxxxxxx> writes: > Dne 5 Listopad 2014, 17:31, Rémy-Christophe Schermesser napsal(a): >> We have 2 instances of PG, one in 9.1.1 and 9.1.14. They have the same >> data, schema, PG configuration, and are almost identical machines, same >> number of cores and memory, but different cloud provider. The data was >> transferred with a pg_dump/pg_restore. We ran VACUUM ANALYSE, ANALYSE, and >> REINDEX on both machines. > Well, the first observation is that the queries produce different results: Yeah. Another reason to not believe that the databases contain identical data is here: >> -> Seq Scan on andalertsmatch am (cost=0.00..71287.87 >> rows=1064987 width=52) (actual time=0.000..1680.077 rows=1064987 loops=1) >> -> Index Scan using andalertsmatch_a_mid_idx on andalertsmatch am >> (cost=0.00..180798.61 rows=1173762 width=52) (actual >> time=0.015..875294.427 rows=1826118122 loops=1) For some reason there's over 1000 times more rows in andalertsmatch in the 9.1.14 installation. I'm betting on a foulup somewhere in the data dump/restore process. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
