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Re: Bitmap Heap scan 8.1/8.2

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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

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TIP 2: Don't 'kill -9' the postmaster

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