optimal memory

From: Sim Zacks <sim(at)compulab(dot)co(dot)il>
To: pgsql-general(at)postgresql(dot)org
Subject: optimal memory
Date: 2010-08-03 08:01:57
Message-ID: 4C57CCF5.8040305@compulab.co.il
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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?

Thanks

Sim

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