Re: Backend memory leakage when inserting

From: <g(dot)hintermayer(at)inode(dot)at>
To: <scott(dot)marlowe(at)ihs(dot)com>
Cc: <pgsql-general(at)postgresql(dot)org>
Subject: Re: Backend memory leakage when inserting
Date: 2003-05-07 07:02:42
Message-ID: 50544.213.33.72.146.1052290962.squirrel@webmail.inode.at
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> On Tue, 6 May 2003, Gerhard Hintermayer wrote:
> [...]
>>
>> Did compile postgreSQL (7.3.1) on a SuSE 8.1 box (Linux,2.4.19 kernel)
>> and see exactly the same behavior. Seems like the amount of leakage
>> depends on the size (number of tables, number of triggers ???) of the
>> whole database, on a empty database the memory growth rate is quite
>> slow (see posted example) , on the production system the mem usage
>> was ~ 120 MB after ~ 300000 inserts.
>
> How many shared buffers is your machine set to use? it may just be
> using them and it looks like a memory leak when it isn't.

In the test case I use the standard value for shared buffers (I think
64=512k).
On the production server I use 25000 (=200M). If a insert process would
try to takeover all of the shared memory, this would'nt be a good thing
either.

Gerhard

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