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Date:      Wed, 11 Mar 2015 12:13:33 -0700
From:      Julian Elischer <julian@freebsd.org>
To:        Oliver Pinter <oliver.pinter@hardenedbsd.org>, Adrian Chadd <adrian@freebsd.org>
Cc:        "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Michael Fuckner <michael@fuckner.net>, freebsd-hardware@freebsd.org
Subject:   Re: Server with 3TB Crashing at boot
Message-ID:  <550093DD.5040603@freebsd.org>
In-Reply-To: <CAPQ4ffsd-SpsLTbGL8BdBsNHLx9HhVQ4Wh%2B95M98fCmT5idPAg@mail.gmail.com>
References:  <550046F7.1050205@fuckner.net> <CAJ-VmokruCyo3M5up9n%2BAfvkr7VFBtUftpdgc=52ES%2BNt6=JZA@mail.gmail.com> <CAPQ4ffsd-SpsLTbGL8BdBsNHLx9HhVQ4Wh%2B95M98fCmT5idPAg@mail.gmail.com>

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On 3/11/15 8:39 AM, Oliver Pinter wrote:
> On Wed, Mar 11, 2015 at 4:26 PM, Adrian Chadd <adrian@freebsd.org> wrote:
>> Hm, have you tried with just one TB of RAM? I haven't had access to
>> systems with 3TB of RAM - I'm just about to get 1TB in a box. :)
>>
>> Hm, other hackers - what's the current size of the AMD64 direct map?
> 4TB - https://github.com/freebsd/freebsd/blob/master/sys/amd64/include/vmparam.h#L157

yeah but since direct-map is, well, directly mapped, you might have 
3TB of ram but it might be spread over  a larger range.
there may be holes in it..  it would be worth knowing the apparent 
layout of the ram.


>
>>
>>
>> -adrian
>>
>>
>> On 11 March 2015 at 06:45, Michael Fuckner <michael@fuckner.net> wrote:
>>> Hi,
>>>
>>> I have a server with 4 Xeon E7-8857 v2 and 96x32TB, organized as 8 Memory
>>> Risers with 12DIMMs each. With 2 Risers I can boot the System with
>>> FreeBSD10.1-p6, when adding a third riser (above 1TB RAM) the system crashes
>>> on boot.
>>>
>>>
>>> http://dedi3.fuckner.net/~molli123/temp/3tb_ap1_phy2.png
>>> http://dedi3.fuckner.net/~molli123/temp/3tb_crash.avi
>>>
>>>
>>> Here is the dmesg/ verbose dmesg, but I believe the verbose one got
>>> truncated. Is there anything more I can do than booting verbose and to copy
>>> /var/run/dmesg.boot?
>>>
>>> http://dedi3.fuckner.net/~molli123/temp/dmesg_q71l-4u_verbose.txt
>>> http://dedi3.fuckner.net/~molli123/temp/dmesg_q71l-4u_10.1.txt
>>>
>>> Regards,
>>>   Michael!
>>>
>>> PS: already posted to freebsd-amd64, but I was told these lists are better.
>>> _______________________________________________
>>> freebsd-hackers@freebsd.org mailing list
>>> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
>>> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
>> _______________________________________________
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