topic Re: memory in Operating System - Linux

memory

Ragni Singh — Fri, 10 Jan 2003 21:00:00 GMT

is there a tool or how can I tell how much memory is in the system. I have just added 2 more gigs of memory on our advance server 2.1 but its not showing the new memory total. Any help is greatly appreciated.

Re: memory

Kodjo Agbenu — Fri, 10 Jan 2003 21:12:53 GMT

Hi,

Try :

cat /proc/meminfo

If you are missing memory, it may be because you are not using the right RedHat kernel.

FYI :

=> the standard kernel is uniprocessor and manages up to 960 MB of RAM

=> the smp kernel is multi-processor and manages up to 4GB of RAM

=> the enterprise or bigmem kernel is multi-processor and manages up to 64GB of RAM.

Good luck.

Kodjo

Re: memory

Ragni Singh — Fri, 10 Jan 2003 21:18:15 GMT

We had 4 gigs of memory on my advance server. I shut the system down, added more memory and broght the system back online. When I go into meminfo, the total is still showing 4 gigs of memory. How do I get it to recognize my newly added memory.

Re: memory

Kodjo Agbenu — Sat, 11 Jan 2003 14:41:46 GMT

Hi,

As I explained above, you need to upgrade your kernel from "smp" to "enterprise" or "bigmem" version.

To do that, you need the cd-roms of RedHat Advanced Server. find the kernel-enterprise (or kernel-bigmem) version, then :

rpm -Uvh kernel-...

At last, edit /etc/lilo.conf or /etc/grub.conf and make the necessary changes.

Don't forget to type /sbin/lilo before rebooting.

Good luck.

Kodjo