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Date:      Mon, 26 Jul 2010 23:55:34 +0300
From:      Andriy Gapon <avg@freebsd.org>
To:        Scott Long <scottl@samsco.org>
Cc:        alc@freebsd.org, Matthew Fleming <mdf356@gmail.com>, freebsd-arch@freebsd.org
Subject:   Re: amd64: change VM_KMEM_SIZE_SCALE to 1?
Message-ID:  <4C4DF646.9090206@freebsd.org>
In-Reply-To: <CA536156-3DF2-4F9B-B620-44B69C866C62@samsco.org>
References:  <4C4DB2B8.9080404@freebsd.org> <AANLkTikY%2BnPTgBtDWcphNkOrW-Aif5TRSCuCn8BsK3p7@mail.gmail.com> <4C4DD1AA.3050906@freebsd.org> <AANLkTinytwzBTbkhpMhODHQX=kMKFD-7Qr-483tx8TTo@mail.gmail.com> <AANLkTinPtfCYO1a%2BBcSf6vnOU_Wf2sb1BTAcqRFptMS-@mail.gmail.com> <CA536156-3DF2-4F9B-B620-44B69C866C62@samsco.org>

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on 26/07/2010 22:42 Scott Long said the following:
> On Jul 26, 2010, at 1:35 PM, Alan Cox wrote:
>> Peter,
>> 
>> In FreeBSD >= 7.3, the kernel address space limit is no longer 6GB.  It is 
>> now 512GB.
>> 
> 
> Ok, I mistakenly thought that it was still 2GB/6GB as well.  So to be clear,
> KVA maxes out at ? 

As Alan said - 512GB.

> and kmem maxes out at ?

There is a formula with bunch of tunables, but normally it's 1/3 of available
physical memory.

Unless I am mistaken.

-- 
Andriy Gapon



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