Debian etch and memory issues with a PE 2950

[Jeremy Cole]

Hi Pau,

You need to use a 64-bit (x86_64) version of Debian.  With the 32-bit 
version you won't be able to get the system to use more memory, as it 
needs some of that address space to map various system components into 
memory.  (And there's only 4GB of address space on a 32-bit system.)

Regards,

Jeremy

Pau Montero Parés wrote:
> Hello!
> 
> I have a PE2950 working with a Debian Etch with kernel 2.6.18-6-686.  
> The server has 4GB RAM but kernel only reports this:
> 
> # dmesg | grep kernel
> Memory: 3371012k/3407520k available (1541k kernel code, 35256k  
> reserved, 580k data, 196k init, 2490016k highmem)
> Freeing unused kernel memory: 196k freed
> 
> I tried to bypass the RAM detection using the grub parameter  
> "mem=4000M" without luck.
> 
> Several days ago and before doing a security kernel update, the  
> servers said that:
> 
> # dmesg | grep -n kernel
> 11:Use a PAE enabled kernel.
> 80:Memory: 3364876k/4194304k available (1541k kernel code, 41388k
> reserved, 576k data, 196k init, 2490016k highmem)
> 428:Freeing unused kernel memory: 196k freed
> 641:BUG: warning at kernel/cpu.c:51/unlock_cpu_hotplug()
> 646:BUG: warning at kernel/cpu.c:51/unlock_cpu_hotplug()
> 
> Any ideas about how can I solve this problem and use the whole RAM?  
> Thanks a lot.
> 

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