Martin Marques <martin@xxxxxxxxxxxxxxx> writes: > Ok, now the 8.1 server has a RAID1 hardware board with SCSI disks, and > the 8.2 is just a PentiumD with SATA disks (it's my desktop PC where I > do tests). Should I have a lower random_page_cost on a machine that is > likely to have a lower disk IO speed? I'd guess the other way round: cheaper disks are likely to have worse seek speeds, which translates to random accesses being proportionally slower. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster