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From: Christian R. <cr@it.dk>
To: Scott Long <scottl@freebsd.org>
Date: Thu, 30 Dec 2004 10:02:31 +0100
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Subject: Re: Memory handling problem with FreeBSD 5.3?
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On Wed, 29 Dec 2004 19:32:04 -0700, you wrote:

>Christian R. wrote:
>> I have installed FreeBSD 5.3-STABLE i386 on a new Dell PowerEdge 2850,
>> but it crashes under load like "make buildworld" with a "panic: page
>> fault".
>>=20
>> The server has following configuration: 2x Intel Xeon 3.4 GHz (800 MHz
>> FSB), 6x 1 GB DDR2 ECC RAM and Perc 4e/Di (LSI Logic/amr driver).
>>=20
>> After some days working on the problem, I think there is some problem
>> with handling the memory. The only way I have got the server to become
>> stable was by switching a special option in the Dell BIOS, which
>> limits the system memory to 256 MB.
>>=20
>> I have tried to limit the memory to 4 GB by activating a spare memory
>> bank, but the server still crashes. Disabling HTT in BIOS and ACPI in
>> the loader also didn't solved the problem.
>>=20
>> The kernel is compiled with SMP of course and PAE because of >4 GB
>> memory. I have removed all the unnecessary devices.
>>=20
>> Dells own diagnostic tool couldn't find any hardware errors. The
>> special memory test also passed all tests. I have also tried with
>> memtest (http://www.memtest.org/) which either could find any memory
>> errors.
>>=20
>> Has anyone an idea to a solution? Has anyone succeeded running FreeBSD
>> 5.3 on similar hardware?
>>=20
>> Would it maybe be better to run the AMD64 version of FreeBSD 5.3? I
>> think the i386 version should be more stable?
>>=20
>
>Upgrade to 5-STABLE.  I fixed these problems a few weeks ago.

I already have done that. I'm using RELENG_5 "5.3-STABLE FreeBSD
5.3-STABLE #0: Tue Dec 28 17:56:04 CET 2004"

Setting hw.physmem=3D3G at boot time has also made the system stable,
but I want to use all of the memory.