[SLL] 32 bit distro that supports 4GB ram with stock kernel

Eric Kahklen eric at kahklen.com
Wed Apr 2 09:08:48 PDT 2008


I am using an Intel Core 2 Duo 32 bit proc.  I know Ubuntu has a 64  
bit version but that is not applicable in my situation.

Thanks,
Eric
On Apr 2, 2008, at 8:47 AM, Kurt Buff wrote:

> Does your machine use a 64-bit-capable proc? Do none of the linux
> distros have a 64bit version, like amd64 FreeBSD?
>
> On Wed, Apr 2, 2008 at 7:54 AM, Eric Kahklen <eric at kahklen.com> wrote:
>> Here is a "How To" I found on the subject.
>>
>> http://www.kreno.be/2007/11/22/howto-ubuntu-4gb-memory-support/
>>
>> I'd like to avoid building custom kernels if possible.  Is this an  
>> Ubuntu
>> specific issue? or do other distros have the same problem?
>>
>> Thanks,
>> Eric
>>
>>
>> On Apr 2, 2008, at 7:08 AM, Jesse Keating wrote:
>>
>>
>>> On Wed, 2008-04-02 at 07:01 -0700, Brian C. Lane wrote:
>>>
>>>>
>>>> Actually, that sounds right. What happens is that the kernel uses  
>>>> a 4G
>>>> virtual space for each process, and reserves a bit of it for  
>>>> itself. So
>>>> when you hit 4G the usable amount of space is actually 4G - Kernel
>> Memory.
>>>>
>>>> Here is an article that does a good job of describing it:
>>>>
>>>> http://kerneltrap.org/node/2450
>>>>
>>>
>>> Not really, as nothing on this page really states that 3G is the  
>>> max a
>>> 32bit kernel can see.  It talks about 1G without HIGHMEM, or two
>>> different HIGHMEM barriers, 4G and 64G.
>>>
>>> I still posit that Ubuntu claiming that their 32bit kernels only  
>>> support
>>> up to 3G of ram seems fishy.
>>>
>>> --
>>> Jesse Keating RHCE      (jkeating.livejournal.com)
>>> Fedora Project          (fedoraproject.org/wiki/JesseKeating)
>>> GPG Public Key          (geek.j2solutions.net/ 
>>> jkeating.j2solutions.pub)
>>>
>>
>>

-----
Eric Kahklen
Lynnwood, WA
206-595-2934






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