New test with temporary table and unlogged Total rows 600k Table size after copy 121MB temp_buffers / copy speed 16MB - 12999 rows/s 128MB - 13005 rows/s 256MB - 13258 rows/s 512MB - 13399 rows/s 1GB - 13145 rows/s Unlogged table - 13333 rows/s I don't undestand why previous test showed the difference -- View this message in context: http://postgresql.1045698.n5.nabble.com/UNLOGGED-TEMPORARY-tables-tp5749477p5749662.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general