Re: optimal memory

In response to Sim Zacks :
> Is there a way to tell what the optimal memory is for a specific
> postgresql instance?
>
> I am configuring Xen virtual machines and I don't want to give it more
> then it needs.
>
> Would looking at the swap be an indication? As soon as it starts to use
> swap, that means I need more, but until that point, I have enough?

You can't have enough ;-)

Fits your DB into the RAM?

If you don't have enough, for instance, work_mem, sort-operations
performed on disk and not in the ram. That's much slower. So, as i said,
you can't have enough ram ;-)

Regards, Andreas
--
Andreas Kretschmer
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