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Date:      Wed, 10 Feb 2010 19:30:45 +0100
From:      Ivan Voras <ivoras@freebsd.org>
To:        Andriy Gapon <avg@icyb.net.ua>
Cc:        freebsd-hackers@freebsd.org, freebsd-stable@freebsd.org
Subject:   Re: Strange problem with 8-stable, VMWare vSphere 4 & AMD CPUs  (unexpected shutdowns)
Message-ID:  <9bbcef731002101030s119afcb6ndc9f5c9af649528c@mail.gmail.com>
In-Reply-To: <9bbcef731002101026k5007075cqf97fc80404ac3fa7@mail.gmail.com>
References:  <hkujop$hsa$1@ger.gmane.org> <4B72D94A.8030509@icyb.net.ua>  <hkup1g$763$1@ger.gmane.org> <4B72E93C.80102@icyb.net.ua>  <9bbcef731002101003r203f5189xf139700a0d48afa0@mail.gmail.com>  <4B72F67F.4000209@icyb.net.ua> <9bbcef731002101026k5007075cqf97fc80404ac3fa7@mail.gmail.com>

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On 10 February 2010 19:26, Ivan Voras <ivoras@freebsd.org> wrote:
> On 10 February 2010 19:10, Andriy Gapon <avg@icyb.net.ua> wrote:
>> on 10/02/2010 20:03 Ivan Voras said the following:
>>> When you say "very unique" is it in the "it is not Linux or Windows"
>>> sense or do we do something nonstandard?
>>
>> The former - neither Linux, Windows or OpenSolaris seem to have what we have.
>
> I can't find the exact documents but I think both Windows
> MegaUltimateServer (the highest priced version of Windows Server,
> whatever it's called today) and Linux (though disabled and marked
> Experimental) have it, or have some kind of support for large pages
> that might not be as pervasive (maybe they use it for kernel only?). I
> have no idea about (Open)Solaris.

VMWare documentation about large pages:

http://www.vmware.com/files/pdf/large_pg_performance.pdf

I think I remember reading that on Windows, the application must use a
special syscall to allocate an area with large pages, but I can't find
the document.



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