Re: Maxium Share Memory in Debian 64bit

From: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
To: Prashant Bharucha <prashantbharucha(at)yahoo(dot)ca>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Maxium Share Memory in Debian 64bit
Date: 2012-02-24 20:35:25
Message-ID: CAOR=d=0xuqW=M8Ws_yJsst5_==tm=AmAUSXOYb4wt3L7Lt8_ow@mail.gmail.com
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On Fri, Feb 24, 2012 at 12:41 PM, Prashant Bharucha
<prashantbharucha(at)yahoo(dot)ca> wrote:
>
> Hello All
>
> Could you please help to figure out how much maxium memory can allocated in Shared Memory on Debian 64 bit OS ?

With appropriate shm settings, you can easily set it high enough to
cause problems with swapping etc. I've successfully allocated 24G in
testing on a machiine with 128G. However, in all the testing I did 8G
was the point where we no longer got any performance increase.

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