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Message-ID: <4c071324.8c43e70a.4d42.65bf@mx.google.com>
Date: Wed, 2 Jun 2010 20:27:46 -0600
From: Joshua Tolley <eggyknap@gmail.com>
To: Tom Wilcox <hungrytom@googlemail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: requested shared memory size overflows size_t
References: <4C063967.4070705@gmail.com>
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On Wed, Jun 02, 2010 at 11:58:47AM +0100, Tom Wilcox wrote:
> Hi,
>
> Sorry to revive an old thread but I have had this error whilst trying to =
=20
> configure my 32-bit build of postgres to run on a 64-bit Windows Server =
=20
> 2008 machine with 96GB of RAM (that I would very much like to use with =
=20
> postgres).
>
> I am getting:
>
> 2010-06-02 11:34:09 BSTFATAL:  requested shared memory size overflows siz=
e_t
> 2010-06-02 11:41:01 BSTFATAL:  could not create shared memory segment: 8
> 2010-06-02 11:41:01 BSTDETAIL:  Failed system call was MapViewOfFileEx.
>
> which makes a lot of sense since I was setting shared_buffers (and =20
> effective_cache_size) to values like 60GB..

I realize other answers have already been given on this thread; I figured I=
'd
just refer to the manual, which says, "The useful range for shared_buffers =
on
Windows systems is generally from 64MB to 512MB." [1]

[1] http://www.postgresql.org/docs/8.4/static/runtime-config-resource.html

--
Joshua Tolley / eggyknap
End Point Corporation
http://www.endpoint.com

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