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@2ndQuadrant.com www.2ndQuadrant.us