1GB system working with 64MB

1GB system working with 64MB

[Edouard Soriano]

Hello Folks,

Environment: linux 2.2.16smp
RedHat 7.0

I am setting up a system with 1GB RAM recongized by the
BIOS during power-on procedure.

This system having troubles, I set a top command and
with surprise I got this  status:

  4:33pm  up  4:42,  3 users,  load average: 4.18, 2.01, 1.09
125 processes: 123 sleeping, 2 running, 0 zombie, 0 stopped
CPU0 states:  9.1% user,  9.0% system,  8.0% nice, 80.1% idle
CPU1 states: 20.0% user,  6.1% system, 20.1% nice, 72.0% idle
Mem:    63892K av,   62480K used,    1412K free,   15076K shrd,    5192K 
buff
Swap:  514040K av,  260556K used,  253484K free                   11804K 
cached

My problem are the 63892K

I remember there is a solution to turn around this problem
forcing LILO to configure 1GB saying, I think but not 
sure:

append='memory=1024'

I searched in the lilo doc for memory parameter definition, but
as being coverd by append parameter I found nothing.

Question 1:
Do you have an idea about the reason Linux is using 64MB ?

Question 2:
Is this append command correct to turn out this problem ?

Question 3:
Where can I found informations about append variables wich
are related in fact with modules parameters ?
How to find on source code which module will read the 
memory parameter ?

Thanks in advance.

Bye
 

Re: 1GB system working with 64MB

[Michael Rothwell]

Add this:

append="mem=1024M"

to your lilo boot profiles.

... 2.4 correctly detects memory size more often than 2.2.16 ...


----- Original Message ----- 
From: "Edouard Soriano" <e_soriano@dapsys.com>
Subject: 1GB system working with 64MB


> Hello Folks,
> Environment: linux 2.2.16smp
> RedHat 7.0
>
> My problem are the 63892K

Re: 1GB system working with 64MB

[J.H.M. Dassen (Ray)]

Edouard Soriano <e_soriano@dapsys.com> wrote:
> I remember there is a solution to turn around this problem forcing LILO to
> configure 1GB saying, I think but not sure:
> 
> append='memory=1024'
> 
> I searched in the lilo doc for memory parameter definition, but as being
> coverd by append parameter I found nothing.

"mem=" is documented in the kernel documentation
(...linux/Documentation/i386/boot.txt):

  mem=<size>
        <size> is an integer in C notation optionally followed by K, M
        or G (meaning << 10, << 20 or << 30).  This specifies to the
        kernel the memory size.
  [snip]

HTH,
Ray
-- 
Does Kibo SEE the FNORDS?

Re: 1GB system working with 64MB

[Arjan van de Ven]

Edouard Soriano wrote:
> 
> Hello Folks,
> 
> Environment: linux 2.2.16smp
> RedHat 7.0


> My problem are the 63892K

If you upgrade to the 2.2.19 kernel, this will just work,
no need for extra options. (Red Hat also has a 2.2.19 kernel 
available as errata release for 7.0)