Re: BUG #4575: All page cache in shared_buffers pinned (duplicated by OS, always)

From: "Pavan Deolasee" <pavan(dot)deolasee(at)gmail(dot)com>
To: "Scott Carey" <scott(at)richrelevance(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #4575: All page cache in shared_buffers pinned (duplicated by OS, always)
Date: 2008-12-11 09:26:20
Message-ID: 2e78013d0812110126q2c5aa1f4ucf5599cfda0e23bb@mail.gmail.com
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On Thu, Dec 11, 2008 at 2:05 PM, Pavan Deolasee
<pavan(dot)deolasee(at)gmail(dot)com> wrote:
>
> Isn't the shared memory on Linux non-swappable, unlike Solaris where
> you have an option to make is swappable ?

Or may be my linux kernel knowledge is stale. I see a SHM_LOCK/UNLOCK
operations in shmctl(2) which can be used to control swapping of shm.

Thanks,
Pavan

--
Pavan Deolasee
EnterpriseDB http://www.enterprisedb.com

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