Re: proposal: Set effective_cache_size to greater of .conf value, shared_buffers

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Merlin Moncure <mmoncure(at)gmail(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: proposal: Set effective_cache_size to greater of .conf value, shared_buffers
Date: 2013-09-11 17:41:48
Message-ID: 5230AB5C.40508@agliodbs.com
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On 09/11/2013 08:27 AM, Bruce Momjian wrote:
> On Wed, Sep 11, 2013 at 09:18:30AM -0400, Bruce Momjian wrote:
>> On Tue, Sep 10, 2013 at 03:08:24PM -0700, Josh Berkus wrote:
>>> Another argument in favor: this is a default setting, and by default,
>>> shared_buffers won't be 25% of RAM.
>>
>> So, are you saying you like 4x now?

I still prefer 3X. However, I acknowledge that there are legitimate
arguments for higher values for a *default*.

--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com

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