[olug] Advice on a new rig

[Dave Rowe]

Obi-Wan wrote:
>> The 32-bit memory limit is 4GB, but only 3GB of that can be used. I ran into
>> this after upgrading my machine, linux can only see 3 while Windows supports
>> all 4 but with PAE.
> 
> I think you're mistaken about the linux side:
> 
> top - 15:14:52 up 27 days, 20:45, 11 users,  load average: 0.06, 0.14, 0.15
> Tasks: 243 total,   1 running, 242 sleeping,   0 stopped,   0 zombie
> Cpu(s):  8.0%us,  1.5%sy,  0.2%ni, 88.6%id,  1.5%wa,  0.1%hi,  0.1%si,  0.0%st
> Mem:   3631308k total,  3206644k used,   424664k free,   548020k buffers
> Swap:  6016252k total,   327784k used,  5688468k free,  1011280k cached
> 
> I'm using well over 3GB at the moment, and the system knows that
> I've got nearly half a GB still available.

Same here.  Using the 'server' kernel from Kubuntu on my desktop, I'm 
able to have everything working, not using any 64-bit stuff, and still 
use my full 4GB of RAM.

top - 15:18:57 up 8 days, 23:17,  1 user,  load average: 0.04, 0.17, 0.19
Tasks: 155 total,   1 running, 154 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.5%us,  1.2%sy,  0.0%ni, 97.0%id,  0.0%wa,  0.2%hi,  0.2%si, 
0.0%st
Mem:   4075252k total,  2341156k used,  1734096k free,   242208k buffers
Swap:  1542200k total,        0k used,  1542200k free,  1260120k cached

The kernel just needs the PAE/HIMEM4G enabled via the CONFIG_HIGHMEM64G 
I believe.