Grzegorz Jaśkiewicz wrote:
raid: serveRAID M5014 SAS/SATA controller
Do the "performant servers" have a different RAID card? This one has terrible performance, and could alone be the source of your issue. The ServeRAID cards are slow in general, and certainly slow running RAID10.
-- Greg Smith 2ndQuadrant US Baltimore, MD PostgreSQL Training, Services and Support greg@xxxxxxxxxxxxxxx www.2ndQuadrant.us -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
