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From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Josh Berkus <josh@agliodbs.com>
Cc: pgsql-hackers@postgresql.org
Subject: Re: Need Multixact Freezing Docs
Date: Thu, 28 Aug 2014 12:09:45 -0400
Message-ID: <20140828160945.GQ7046@eldon.alvh.no-ip.org> (raw)
In-Reply-To: <534EEA8E.5070407@agliodbs.com>
References: <534DA3D1.2010000@agliodbs.com>
	<WM!e71c36af513bace4ff046f7349231f370d2b74c4adee803b2eb3ed330aada82b5badd712b47f9556d3fa55d2ab73a3e0!@asav-3.01.com>
	<534DB22A.2040909@agliodbs.com>
	<20140416133233.GL5822@eldon.alvh.no-ip.org>
	<WM!a70b2681d2ac0ed55eb2d3eed44e6730e9c71b5fad8c5320503fde8b18a03fd98a6af6244821ca39d47c1d9e758c45ff!@asav-2.01.com>
	<534EC69B.9010107@agliodbs.com>
	<20140416203057.GQ5822@eldon.alvh.no-ip.org>
	<WM!fa9379a39fd015511ce3872138589081b6e688c26b67a6801364b609b26642096bfd329ce2cb7eb090da00879e59e525!@asav-3.01.com>
	<534EEA8E.5070407@agliodbs.com>
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Josh Berkus wrote:
> On 04/16/2014 01:30 PM, Alvaro Herrera wrote:
> > Josh Berkus wrote:
> >>
> >>> You can see the current multixact value in pg_controldata output.  Keep
> >>> timestamped values of that somewhere (a table?) so that you can measure
> >>> consumption rate.  I don't think we provide SQL-level access to those
> >>> values.
> >>
> >> Bleh.  Do we provide SQL-level access in 9.4?  If not, I think that's a
> >> requirement before release.
> > 
> > Yeah, good idea.  Want to propose a patch?
> 
> Yeah, lemme dig into this.  I really think we need it for 9.4, feature
> frozen or not.

Ping?

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services


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