Op 22 feb 2010, om 20:28 heeft Yang Zhang het volgende geschreven:
If your work-mem is too low there's a good chance that Postgres has touse your disks for sorting, which will obviously be quite slow.Relative to the non-terminating 80-minute-so-far sort, Unix sort runsmuch faster (on the order of several minutes).Make sure your index does fit into memory, what's the size of the index?How might I find out the size and whether it's being fit in memory?
SELECT pg_size_pretty(pg_relation_size('i_transactionid'));
-- Yang Zhang http://www.mit.edu/~y_z/ -- Sent via pgsql-general mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Frank Heikens -- Sent via pgsql-general mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
