http://www.dslreports.com/forum/r16114839 en Wed, 09 Dec 2009 17:30:33 EDT Wed, 09 Dec 2009 17:30:33 EDT http://www.dslreports.com/forum/remark,16117750 BeesTea : You need to enable the CONFIG_HIGHMEM64G option for your kernel.

You can test if it's set

$ sudo zgrep -i HIGHMEM /proc/config.gz
# CONFIG_NOHIGHMEM is not set
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_HIGHMEM=y

or

grep -i HIGHMEM /usr/src/your_kernel/.config

EDIT: Just noticed that you said it sees 8GB already, that implies it might already be set. Worth checking though.
--
Never surrender, never go down.]]> http://www.dslreports.com/forum/remark,16117750 Wed, 17 May 2006 18:51:32 EDT http://www.dslreports.com/forum/remark,16114839 technick : I just installed CentOS 4.2 on a IBM Server loaded out with 16 gigs of memory. CentOS comes up and recognizes 8 gigs of memory only. I googled it and came across the kernel-hugemem. I am still having the same problems running on the hugemem kernel.

The bios see's all 16 gigs of memory so I know it's there.

Thanks in advance.

Nick

[root@vs1 ~]# uname -r
2.6.9-34.ELhugemem
[root@vs1 ~]# free
total used free shared buffers cached
Mem: 8032148 96204 7935944 0 12032 32428
-/+ buffers/cache: 51744 7980404
Swap: 16386292 0 16386292
[root@vs1 ~]#

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Advocatus Diaboli]]> http://www.dslreports.com/forum/remark,16114839 Wed, 17 May 2006 11:44:00 EDT