| From: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> |
|---|---|
| To: | Marc Rechté <marc4(at)rechte(dot)fr>, pgsql-performance(at)lists(dot)postgresql(dot)org |
| Subject: | Re: NUMA settings |
| Date: | 2020-05-05 08:25:57 |
| Message-ID: | 78e4af96a4b34f1280ef96ddf347d5f7b8a53380.camel@cybertec.at |
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| Lists: | pgsql-performance |
On Tue, 2020-05-05 at 10:11 +0200, Marc Rechté wrote:
> > I think that "vm.swappiness" should be 0.
> > PostgreSQL does its own memory management, any swapping by the kernel
> > would go against that.
> >
> > Yours,
> > Laurenz Albe
> >
> As said in the post, we wish the idle backends to be swapped out if
> necessary. Therefore lowering swappiness would produce the opposite
> effect: swapping out Linux file cache rather than backends memory.
I see. Sorry for not paying attention.
An idle backend consumes only a few MB of RAM, though.
Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com
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