On Wed, Jul 27, 2016 at 5:54 PM, thomas veymont <thomas.veymont@xxxxxxxxx> wrote: > We switched from PostgreSQL server 9.3 to 9.5. From the very beginning there > was a noticeable drop in performances (for example : when injecting our SQL > dumps into 9.5, COPY and CREATE INDEX were very slow). > > Our configuration file was the same for 9.3 and 9.5, except for the > "chekpoint segment" that has been deprecated. Which value are you using for max_wal_size and min_wal_size? And which value of checkpoint_segments did you use previously? This could influence the checkpoint frequency. -- Michael -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
