Hi Pietro, On Wed, Apr 1, 2015 at 3:56 PM, Pietro Pugni <pietro.pugni@xxxxxxxxx> wrote: > T420: went from 311seconds (default postgresql.conf) to 195seconds doing > tuning adjustments over RAID, kernel and postgresql.conf; > MacMini: 40seconds. I'am afraid, the matter is, that PostgreSQL is not configured properly (and so do operating system and probably controller, however pg_test_fsync shows that things are not so bad there as with postgresql.conf). It is pretty useless to benchmark a database using out-of-the-box configuration. You need at least configure shared memory related, checkpoints-related and autovacuum-related settings. And as a first step, please compare postgresql.conf on Mac and on the server: sometimes (with some mac installers) default postgresql.conf can be not the same as on server. Best regards, Ilya -- Ilya Kosmodemiansky, PostgreSQL-Consulting.com tel. +14084142500 cell. +4915144336040 ik@xxxxxxxxxxxxxxxxxxxxxxxxx -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
