> As anyone done benchmarking tests with postgres running on solaris and linux
> (redhat) assuming both environment has similar hardware, memory, processing
> speed etc. By reading few posts here, i can see linux would outperform
> solaris cause linux being very good at kernel caching than solaris which is
> being the key performance booster for postgres.  what is the preferred OS
> for postgres deployment if given an option between linux and solaris. As
> well as filesystem to be used (xfs, ufs, ext3...). Any pointer to source of
> information is appreciated.

Most of that is a matter of opinion.   Read the cumulative archives of this 

-Josh Berkus
 Aglio Database Solutions
 San Francisco

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