Re: I/O on select count(*)

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On Mon, 2008-05-26 at 11:36 -0400, Tom Lane wrote:
> "Heikki Linnakangas" <heikki@xxxxxxxxxxxxxxxx> writes:
> > Decibel! wrote:
> >> Also, Simon and Tom had an idea at PGCon: Don't set hint-bits in the 
> >> back-end if the page isn't already dirty. 
> 
> > Or even better: set the hint-bits, but don't dirty the page.
> 
> Which in fact is what Simon suggested, not the other thing.

Just raised this on -hackers, BTW. 

-- 
 Simon Riggs           www.2ndQuadrant.com
 PostgreSQL Training, Services and Support



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