Re: Performance

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On 04/13/2011 05:03 PM, Tom Lane wrote:
That 4:1 ratio is based on some rather extensive experimentation that
I did back in 2000.  In the interim, disk transfer rates have improved
quite a lot more than disk seek times have, and the CPU cost to process
a page's worth of data has also improved compared to the seek time.
My experience is that at least a 1/1 is more appropriate.

JD

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