Glyn Astill <glynastill@xxxxxxxxxxx> wrote: > The new server uses 4 x 8 core Xeon X7550 CPUs at 2Ghz Which has hyperthreading. > our current servers are 2 x 4 core Xeon E5320 CPUs at 2Ghz. Which doesn't have hyperthreading. PostgreSQL often performs worse with hyperthreading than without. Have you turned HT off on your new machine? If not, I would start there. -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
