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

[Brian C. Lane]

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Jesse Keating wrote:
| On Wed, 2008-04-02 at 06:47 -0700, Eric Kahklen wrote:
|> Thanks for the insight :)  Since this is only a laptop, I'll never go
|> over 4 GB on this machine.  As far as I understand it, the latest stable
|> version of Ubuntu's stock kernel only supports 3 GB of ram and you need
|> to recompile the kernel for larger support.  I was hoping the never
|> version supported 4 GB's out of the box vs. reconfiguring the kernel.
|> If there are easier solution vs. a kernel hack please let me know.
|
| 3 seems like a very strange number.  I'd suggest booting up a live image
| and see exactly how much ram it sees.
|

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

Brian

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