From: Craig Ringer <ringerc@ringerc.id.au>
To: Rafael Martinez <r.m.guerrero@usit.uio.no>
Cc: pgsql-performance@postgresql.org
Subject: Re: Dramatic change in memory usage with version 9.1
Date: Wed, 21 Dec 2011 07:48:54 +0800
Message-ID: <4EF11EE6.6020203@ringerc.id.au> (raw)
In-Reply-To: <4EEF5296.2030101@usit.uio.no>
References: <4EEF5296.2030101@usit.uio.no>
On 19/12/2011 11:04 PM, Rafael Martinez wrote:
> Any ideas about why this dramatic change in memory usage when the only
> thing apparently changed from our side is the postgres version?
>
It'd be interesting to know how much of your workload operates with
SERIALIZABLE transactions, as the behavior of those has changed
significantly in 9.1 and they _are_ more expensive in RAM terms now.
--
Craig Ringer
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To: pgsql-performance@postgresql.org
Cc: ringerc@ringerc.id.au, r.m.guerrero@usit.uio.no
Subject: Re: Dramatic change in memory usage with version 9.1
In-Reply-To: <4EF11EE6.6020203@ringerc.id.au>
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