PDA

View Full Version : Ram - i386 and i686



ace2005
6th August 2005, 09:29 AM
I read this in a forum while looking for a way to speed up Open Office


Are you running an i386 kernel? To take advantage of 1G or more you need to install an i686 kernel or i686-smp kernel. Check your /var/log/kern.log. Does it look like this?:

klogd 1.4.1#14ubuntu4, log source = /proc/kmsg started.
localhost kernel: Inspecting /boot/System.map-2.6.8.1-3-386
localhost kernel: Loaded 28166 symbols from /boot/System.map-2.6.8.1-3-386.
localhost kernel: Symbols match kernel version 2.6.8.
localhost kernel: Warning only 896MB will be used.
localhost kernel: Use a HIGHMEM enabled kernel.
localhost kernel: 896MB LOWMEM available.


This is what an -686 kernel looks like:

klogd 1.4.1#14ubuntu4, log source = /proc/kmsg started.
localhost kernel: Inspecting /boot/System.map-2.6.8.1-4-686-smp
localhost kernel: Loaded 27787 symbols from /boot/System.map-2.6.8.1-4-686-smp.
localhost kernel: Symbols match kernel version 2.6.8.
localhost kernel: Linux version 2.6.8.1-4-686-smp (buildd@rockhopper) (gcc version 3.3.4 (Debian 1:3.3.4-9ubuntu5)) #1 SMP Wed
localhost kernel: 1150MB HIGHMEM available.
localhost kernel: 896MB LOWMEM available.

So does this apply to Fedora Core 4 too? Is only 896mb of my ram being used?

I don't have a /var/log/kern.log

Twey
6th August 2005, 10:41 AM
I don't think it does apply, no. Fedora is based on the Redhat kernel, not the Linux kernel (so technically it isn't Linux!). I believe it can handle all your RAM sufficiently.

ace2005
6th August 2005, 11:04 AM
I don't think it does apply, no. Fedora is based on the Redhat kernel, not the Linux kernel (so technically it isn't Linux!). I believe it can handle all your RAM sufficiently.

Ok thats good to hear but i whats the difference between redhat's kernel and the linux kernel, why did they change it?

Jman
7th August 2005, 02:33 AM
Ok thats good to hear but i whats the difference between redhat's kernel and the linux kernel, why did they change it?

Here's a list of kernel patches (http://people.redhat.com/davej/patchlist-rawhide.txt) from a kernel hacker from Red Hat. Mostly it is what you get from kernel.org however.

And Fedora only has i586 and i686 kernels.

You should be fine, run
free -m to see a summary of your memory usage.

ace2005
7th August 2005, 09:52 AM
Yea its working fine thanks