new installation not finding large memory

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new installation not finding large memory

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Miles Fidelman
*nix forums beginner

Joined: 20 Jul 2006
Posts: 8

Posted: Thu Jul 20, 2006 9:00 pm Post subject: Note

new installation not finding large memory

Hi Folks,

I know I must be doing something very silly, but my brand new installation
is only finding 1gig of the 4gig of ram installed in my brand new server.

Even if I stick a "mem=4096m" line as a boot option, it's still not
showing up. (the only suggestion I've seen in the reference materials).

Any suggestions?

Thanks very much,

Miles Fidelman

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Gilles Mocellin
*nix forums beginner

Joined: 30 Apr 2006
Posts: 11

Posted: Thu Jul 20, 2006 9:20 pm Post subject: Note

Re: new installation not finding large memory

Le jeudi 20 juillet 2006 22:26, Miles Fidelman a écrit :

Quote:

Which kernel do you use ?
I saw the same thing with a default i386 kernel.
When I switched to an i686-smp one (Xeon HT), I saw the light... Hum, the
RAM !

Soma R
*nix forums beginner

Joined: 10 Jul 2006
Posts: 6

Posted: Thu Jul 20, 2006 9:50 pm Post subject: Note

Re: new installation not finding large memory

Miles Fidelman wrote:

Quote:

check /boot/config-$kernel
see:
jeffd@proto:~$ grep CONFIG_HIGHMEM /boot/config-2.6.8-2-386
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
jeffd@proto:~$ grep CONFIG_HIGHMEM /boot/config-2.6.8-2-k7
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_HIGHMEM=y

this is from a sarge system that i have, the 386 kernel wont support
that much memory, but the k7 will, those are the only ones I have, but
I'd bet that the 686 versions do as well.

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Miles Fidelman
*nix forums beginner

Joined: 20 Jul 2006
Posts: 8

Posted: Thu Jul 20, 2006 9:50 pm Post subject: Note

Re: new installation not finding large memory

On Thu, 20 Jul 2006, Gilles Mocellin wrote:

Quote:

Le jeudi 20 juillet 2006 22:26, Miles Fidelman a écrit :
Hi Folks,

I know I must be doing something very silly, but my brand new installation
is only finding 1gig of the 4gig of ram installed in my brand new server.

Even if I stick a "mem=4096m" line as a boot option, it's still not
showing up. (the only suggestion I've seen in the reference materials).

Any suggestions?

Which kernel do you use ?
I saw the same thing with a default i386 kernel.
When I switched to an i686-smp one (Xeon HT), I saw the light... Hum, the
RAM !

I'm using the out-of-the-box i386 2.6 kernel that comes with the Sarge
installer.

So I guess I have to build a kernel? Sigh...

Thanks,

Miles

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Soma R
*nix forums beginner

Joined: 10 Jul 2006
Posts: 6

Posted: Thu Jul 20, 2006 10:00 pm Post subject: Note

Re: new installation not finding large memory

Miles Fidelman wrote:

Quote:

On Thu, 20 Jul 2006, Gilles Mocellin wrote:

Le jeudi 20 juillet 2006 22:26, Miles Fidelman a écrit :

Hi Folks,

I know I must be doing something very silly, but my brand new installation
is only finding 1gig of the 4gig of ram installed in my brand new server.

Even if I stick a "mem=4096m" line as a boot option, it's still not
showing up. (the only suggestion I've seen in the reference materials).

Any suggestions?

Which kernel do you use ?
I saw the same thing with a default i386 kernel.
When I switched to an i686-smp one (Xeon HT), I saw the light... Hum, the
RAM !

I'm using the out-of-the-box i386 2.6 kernel that comes with the Sarge
installer.

So I guess I have to build a kernel? Sigh...

Thanks,

Miles

you can just apt-get a new kernel

apt-cache search kernel-image-2.6 will show you the list of available
kernels, just pick the one that is right for your system

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Gilles Mocellin
*nix forums beginner

Joined: 30 Apr 2006
Posts: 11

Posted: Thu Jul 20, 2006 10:20 pm Post subject: Note

Re: new installation not finding large memory

Le jeudi 20 juillet 2006 23:22, Miles Fidelman a écrit :

Quote:

On Thu, 20 Jul 2006, Gilles Mocellin wrote:
Le jeudi 20 juillet 2006 22:26, Miles Fidelman a écrit :
Hi Folks,

I know I must be doing something very silly, but my brand new
installation is only finding 1gig of the 4gig of ram installed in my
brand new server.

Even if I stick a "mem=4096m" line as a boot option, it's still not
showing up. (the only suggestion I've seen in the reference
materials).

Any suggestions?

Which kernel do you use ?
I saw the same thing with a default i386 kernel.
When I switched to an i686-smp one (Xeon HT), I saw the light... Hum, the
RAM !

I'm using the out-of-the-box i386 2.6 kernel that comes with the Sarge
installer.

So I guess I have to build a kernel? Sigh...

If your processor is a 686 compatible, use the i686 from sarge !
If you have an athlon, use the k7 one.
There's more than one "out-of-the-box" kernel in sarge.
Type :
# aptitude show kernel-image

Miles Fidelman
*nix forums beginner

Joined: 20 Jul 2006
Posts: 8

Posted: Fri Jul 21, 2006 2:10 am Post subject: Note

Re: new installation not finding large memory

Jeff D wrote:

Quote:

Miles Fidelman wrote:
On Thu, 20 Jul 2006, Gilles Mocellin wrote:

Le jeudi 20 juillet 2006 22:26, Miles Fidelman a écrit :

Hi Folks,

I know I must be doing something very silly, but my brand new
installation
is only finding 1gig of the 4gig of ram installed in my brand new
server.

Even if I stick a "mem=4096m" line as a boot option, it's still not
showing up. (the only suggestion I've seen in the reference
materials).

Any suggestions?

Which kernel do you use ?
I saw the same thing with a default i386 kernel.
When I switched to an i686-smp one (Xeon HT), I saw the light... Hum,
the RAM !

I'm using the out-of-the-box i386 2.6 kernel that comes with the Sarge
installer.
So I guess I have to build a kernel? Sigh...

Thanks,

Miles

you can just apt-get a new kernel
apt-cache search kernel-image-2.6 will show you the list of available
kernels, just pick the one that is right for your system

ok - thanks to all who responded - looks like I'm currently running
2.6.8-2-386
CONFIG_EDD=m
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set

which explains a lot

looks like
kernel-image-2.6.8-2-686, or
kernel-image-2.6.8-3-686
would be appropriate (I'm running a P4, single processor)
any particular reason to go with one or the other?

and, a few newbie questions:
- any idea why the installer only gives the -386 kernel as a choice?
- the 2.6 kernel off the Sarge installer comes with SATA, md, and LVM
support - will the -686 version as well?
- what's the specific procedure for replacing my current kernel and
initrd with the new one - is it just an apt-get install, or is it more
complicated?

Thanks again,

Miles

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Karl Goetz
*nix forums beginner

Joined: 19 May 2006
Posts: 4

Posted: Fri Jul 21, 2006 10:30 am Post subject: Note

Re: new installation not finding large memory

Miles Fidelman wrote:

Quote:

Jeff D wrote:
Miles Fidelman wrote:
On Thu, 20 Jul 2006, Gilles Mocellin wrote:

Le jeudi 20 juillet 2006 22:26, Miles Fidelman a écrit :

Hi Folks,

I know I must be doing something very silly, but my brand new
installation
is only finding 1gig of the 4gig of ram installed in my brand new
server.

Even if I stick a "mem=4096m" line as a boot option, it's still not
showing up. (the only suggestion I've seen in the reference
materials).

Any suggestions?

Which kernel do you use ?
I saw the same thing with a default i386 kernel.
When I switched to an i686-smp one (Xeon HT), I saw the light...
Hum, the RAM !

I'm using the out-of-the-box i386 2.6 kernel that comes with the
Sarge installer.
So I guess I have to build a kernel? Sigh...

Thanks,

Miles

you can just apt-get a new kernel
apt-cache search kernel-image-2.6 will show you the list of
available kernels, just pick the one that is right for your system

ok - thanks to all who responded - looks like I'm currently running
2.6.8-2-386
CONFIG_EDD=m
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set

which explains a lot

looks like
kernel-image-2.6.8-2-686, or
kernel-image-2.6.8-3-686
would be appropriate (I'm running a P4, single processor)
any particular reason to go with one or the other?
the -3 is more up to date, so probably a good idea.

and, a few newbie questions:
- any idea why the installer only gives the -386 kernel as a choice?
if you do an expert install it will give a choice afaik.
- the 2.6 kernel off the Sarge installer comes with SATA, md, and LVM
support - will the -686 version as well?
should do
- what's the specific procedure for replacing my current kernel and
initrd with the new one - is it just an apt-get install, or is it more
complicated?
apt-get install $newkernel

reboot
apt-get --purge remove $oldkernel

kk

Quote:

Thanks again,

Miles

--
Karl Goetz
The buck stops there -> $
Australian Ubuntu users team - http://wiki.ubuntu.com/AustralianTeam

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Miles Fidelman
*nix forums beginner

Joined: 20 Jul 2006
Posts: 8

Posted: Fri Jul 21, 2006 12:10 pm Post subject: Note

Re: new installation not finding large memory

Thanks VERY much!

And...

Karl Goetz wrote:

Quote:

- any idea why the installer only gives the -386 kernel as a choice?
if you do an expert install it will give a choice afaik.

Actually, fyi, it doesn't. The only choices it gives are between a 2.4
and a 2.6 kernel for -386.

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