| 1 |
On Sat, 2007-07-28 at 20:28 -0300, Daniel van Ham Colchete wrote: |
| 2 |
> Hello everyone!!! |
| 3 |
> |
| 4 |
> May be somebody can shed some light here... I'm building a server here |
| 5 |
> with 4GB of RAM memory. The fact is, if I boot with mem=3072M |
| 6 |
> everything goes as fast as it should but I'm not using 1GB of memory. |
| 7 |
> If I don't put the mem option, Linux will see 4GB of memory available |
| 8 |
> but it will be damn slow (really). |
| 9 |
> |
| 10 |
> To make Linux recognize 4 gigs of memory I had to activate |
| 11 |
> HIGHMEM=64GB, otherwise it only recognizes 3279MB (but it is fast). |
| 12 |
> |
| 13 |
> My processor is a Intel Core 2 Duo E6320 (1.86Ghz). The motherboard is |
| 14 |
> Intel. I'm running Gentoo at 32bits mode and the kernel version is |
| 15 |
> 2.6.20-gentoo-r8. |
| 16 |
> |
| 17 |
> Any lights would be very appreciated. |
| 18 |
> |
| 19 |
> Best regards, |
| 20 |
> Daniel Colchete |
| 21 |
|
| 22 |
I don't actually run 4GB of RAM in any of my intel systems, so I can't |
| 23 |
comment from experience, however my suspicion would be the overhead |
| 24 |
introduced from PAE, which (at least on older kernels) requires some |
| 25 |
processing overhead to utilise. Are you able to try a 64-bit install to |
| 26 |
determine if this is the case? |
| 27 |
|
| 28 |
Regards, |
| 29 |
|
| 30 |
Tim Allingham |
| 31 |
Email:Tim@××××××××××××××××.au |
Archives