Re: Dynamically sizing FSM?

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: josh(at)agliodbs(dot)com
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Dynamically sizing FSM?
Date: 2007-01-09 20:34:38
Message-ID: 200701092034.l09KYc708773@momjian.us
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Josh Berkus wrote:
> All,
>
> Hey, is there any good reason why FSM is sized by a static GUC variable?
> Why couldn't we just automatically have the system use as much memory as
> it needs for FSM, provided that it's not more than some reasonable limit,
> like 15% of shared memory?
>
> Seems like that would eliminate one area of user confusion, as well as
> over-allocation.

I don't think any of our shared memory segments auto-size. What would
you take memory from to increase FSM?

--
Bruce Momjian bruce(at)momjian(dot)us
EnterpriseDB http://www.enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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