Re: 2GB de RAM et noyau 2.2.20
merci pour a tous ceux qui m'ont repondu.
(juste pour info, mon bios m'indique bien 2Go au démarrage.)
je recompile....
merci
Luc
A 16:59 07/05/2003 +0000, François Boisson a écrit :
>Option de compilation du noyau 2.2.x:
>
>Ca devrait répondre à ta question (2ème paragraphe et suivant)
>
>François Boisson
>
>CONFIG_NOHIGHMEM:
>
>Linux can use up to 64 Gigabytes of physical memory on x86 systems.
>However, the address space of 32-bit x86 processors is only 4
>Gigabytes large. That means that, if you have a large amount of
>physical memory, not all of it can be "permanently mapped" by the
>kernel. The physical memory that's not permanently mapped is called
>"high memory".
>
>If you are compiling a kernel which will never run on a machine with
>more than 960 megabytes of total physical RAM, answer "off" here (default
>choice and suitable for most users). This will result in a "3GB/1GB"
>split: 3GB are mapped so that each process sees a 3GB virtual memory
>space and the remaining part of the 4GB virtual memory space is used
>by the kernel to permanently map as much physical memory as
>possible.
>
>If the machine has between 1 and 4 Gigabytes physical RAM, then
>answer "4GB" here.
>
>If more than 4 Gigabytes is used then answer "64GB" here. This
>selection turns Intel PAE (Physical Address Extension) mode on.
>PAE implements 3-level paging on IA32 processors. PAE is fully
>supported by Linux, PAE mode is implemented on all recent Intel
>processors (Pentium Pro and better). NOTE: If you say "64GB" here,
>then the kernel will not boot on CPUs that don't support PAE!
>
>The actual amount of total physical memory will either be auto
>detected or can be forced by using a kernel command line option such
>as "mem=256M". (Try "man bootparam" or see the documentation of your
>boot loader (grub, lilo or loadlin) about how to pass options to the
>kernel at boot time.)
>
>If unsure, say "off".
>
>On Wed, 07 May 2003 15:54:49 +0200
>Luc Santeramo <luc.santeramo@univ-avignon.fr> wrote:
>
>> Bonjour,
>>
>> Je viens d'installer 2 barrettes de 1Go de RAM ECC sur un serveur
>> tournant sous Debian 3.0r1 avec un noyau 2.2.20 compact
>>
>> Quand je lance la commande "free" j'ai une mémoire total de 971176ko
>>
>> J'ai ajouté dans lilo.conf append="mem=2000M" puis executé la commande
>> "lilo" mais rien ne change apres le reboot
>> j'ai essayé en specifiant mem=2G
>> ca ne fonctionne pas non plus
>>
>> mais mem=600M fonctionne :(
>>
>>
>> Ya t il une limitation sur les noyaux 2.2.x ?
>>
>> je n'ai pas trouvé d'info sur le net......
>>
>> qq'un aurait il qques infos a ce sujet svp ?
>>
>> merci
>>
>> Luc
>>
>>
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>
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