[mythtv-users] Mythbuntu 32bit - how much RAM can it use?

[Nick Rout]

On Sun, Dec 18, 2011 at 9:18 PM, Martin Moores <moores.martin at gmail.com> wrote:
> On 18 December 2011 16:03, Kingsley Turner <krt at krt.com.au> wrote:
>> Hi-yas!
>>
>> I moved my workstation motherboard into my mythbox, so now the 32-bit OS has
>> access to 8G ram.
>> However it only "sees" 2.5G
>>
>> Is there some tweak I can do to this?  I expected it to use at least 4G.
>>
>> Guess I could update to 64bit Mythbuntu ... but the WAF would be low, since
>> i reckon it would take at least a couple of days to sort it all out to back
>> how it was (firmware for PCI cards, channel setup, etc.).
>>
>> The memory is an issue because this box (given it's always on) also serves
>> the kids' minecraft server, which is a real RAM hog.
>>
>> thanks,
>> -kt
>
> As far as I know, the technical limit of 3GB applies to Linux OS's as
> well as Windows.  A mistake constantly made at work when managers want
> faster machines.............
>
> 32-bit OS's can only "see" or map 3GB of RAM, this includes video RAM,
> I would recommend the 64-bit route, I have used 64-bit Ubuntu and have
> not had any issues as far as anything being incompatible for example.
>
> I do remember reading somewhere about there being a way around this
> RAM limit in Linux, but I don't know where and to what extent it was
> true, I guess a bit of Googleing would throw up anything like that


pae kernel? http://en.wikipedia.org/wiki/Physical_Address_Extension