Re: system cache and buffer cache

From: Heikki Linnakangas <heikki(at)enterprisedb(dot)com>
To: Praveen Kumar N <praveen_n(at)students(dot)iiit(dot)net>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: system cache and buffer cache
Date: 2006-09-19 13:59:41
Message-ID: 450FF7CD.6010603@enterprisedb.com
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Praveen Kumar N wrote:
> Buffer cache is implemented using bufferpool right(I mean in the main
> memory).

Yes. It's in shared memory, size is controlled by the shared_buffers
configuration parameter.

> how about system cache? Can we control the size of system cache?

It's in backend-private memory. I don't remember how it's sized.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com

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