Hello  Jaime,
        
        I think you're on the right track but have gotten some
        concepts possibly confused.

        As I remember,   the original email asked if Postgres
        could be run in a "raw" mode.   Another submitter
        told us that it can not.   ( Did I read that correctly, everyone ? )

        This means run Postgress in a raw or character mode versus
        the "standard" block mode as you would handle other files
        in a filesystem.     The primary advantage for a raw mode
        is speed.  ORACLE allows this method of operation.

        So ... your last question is now rather moot.   For best
        performance assure your setup parameters and Linux
        kernel parameters are optimized.      Help with that
        is a few keystrokes from anywhere.

Terry



Jaime Casanova wrote:

> Can you tell me (or at least guide me to a palce where i can find the
> answer) what are the benefits of filesystems over raw devices?
>
> And what filesystem is the best for postgresql performance?
>


-- Terry L. Hampton Project Manager LimaCorp, LLC www.limacorp.com 513.587.1874



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