Re: CentOS - PostgreSQL 9.2.13 -> 9.4

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
Cc: Melvin Davidson <melvin6925(at)gmail(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Michael H <michael(at)wemoto(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: CentOS - PostgreSQL 9.2.13 -> 9.4
Date: 2015-08-18 16:41:35
Message-ID: 20150818164135.GH5232@alvherre.pgsql
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Alvaro Herrera wrote:

> One thing to look at is the rate of WAL generation for a set number of
> transactions. Maybe the later releases are generating more WAL due to
> multixacts, for instance (prior to 9.3 these weren't wal-logged.)

Also try 9.5alpha2, wherein bug #8470 is fixed, which is a big
performance regression in 9.3 and 9.4.

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

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