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How can I set up Postgres to use given amount of RAM?

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Subject: How can I set up Postgres to use given amount of RAM?
From: "W.P." <laurentp@xxxxx>
Date: Sun, 26 Jun 2022 20:40:01 +0200
Disposition-notification-to: "W.P." <laurentp@xxxxx>
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Question in topic:

"How can I set up Postgres to use given amount of RAM?"

I have now laptop with 8GB of RAM, i can see Linux uses no more than 2-3GB.

So my question is how to FORCE PostgreSQL

use let's say 2-4Ghow to B of RAM for caching tables  I run queries on?

As I can see disk actity running queries.


W.P..

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