Re: Dramatic change in memory usage with version 9.1

From: Craig Ringer <ringerc(at)ringerc(dot)id(dot)au>
To: Rafael Martinez <r(dot)m(dot)guerrero(at)usit(dot)uio(dot)no>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Dramatic change in memory usage with version 9.1
Date: 2011-12-20 23:48:54
Message-ID: 4EF11EE6.6020203@ringerc.id.au
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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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