RE: Physical memory versus detected memory 2.4.7-10

Matt_Domsch@Dell.com
Sun, 27 Jan 2002 21:50:42 -0600

> | My server detects less memory than it available.
> |
> | Available memory according to the BIOS 4049MB.
> |
> | System sees only 3.7GB ???
> | Mem: 3799580K av, 1606816K used, 2192764K free, 468K shrd, 376972K
buff
> | Swap: 8192992K av, 0K used, 8192992K free 1037532K cached

The difference is space assigned to PCI cards or reserved for hot-plug PCI
cards. You should be able to run a CONFIG_HIGHMEM64G-enabled kernel (such
as the Red Hat 2.4.x-enterprise kernels instead of the -smp kernel) and be
able to use the remaining memory, at the performance cost of enabling PAE.

Thanks,
Matt

-- 
Matt Domsch
Sr. Software Engineer
Dell Linux Solutions www.dell.com/linux
#1 US Linux Server provider with 24.5% (IDC Dec 2001)
#2 Worldwide Linux Server provider with 18.5% (IDC Dec 2001)
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