Re: Dramatic change in memory usage with version 9.1

Hello,

Can you find some relation between the memory usage and insert statements?
9.1.2 has memory problems with inserts (even the simplest ones) on Linux
and Windows too, I could produce it. Using pgbench also shows it. Some
memory is not reclaimed.
I could produce it also with 8.4.9 on Linux, I haven't tried 8.4.10 yet.

Best regards,
Otto

2011/12/21 Rafael Martinez <r(dot)m(dot)guerrero(at)usit(dot)uio(dot)no>

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> On 12/21/2011 12:48 AM, Craig Ringer wrote:
> > 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.
> >
>
> Hello
>
> As long as I know, all the databases are using the default, "read
> committed".
>
> We have almost 500 databases across all our servers, but we are only
> dbas. We provide the infrastructure necessary to run this and help users
> when they need it but we have not 100% control over how they are using
> the databases ;-)
>
> regards,
> - --
> Rafael Martinez Guerrero
> Center for Information Technology
> University of Oslo, Norway
>
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