Re: [Xen-devel] Hypervisor reserves 50GB RAM

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

32-bit Xen only supports 16GB. You need to use a 64-bit hypervisor to use
more (this will work fine with your PAE dom0 kernel!).

 -- Keir

On 21/11/08 08:44, "abc" <abc@xxxxxxxxxxxxxx> wrote:

> I just installed SuSE11 with kernel 2.6.25.18.0.2-xen PAE on a 16 core
> 64GB equipped Caneland machine.
> After booting dom0, top shows that roughly 50GB are missing.
> 
> Where did all the memory go?
> 
>> top
> 
> top - 09:39:29 up 3 days, 19:37,  6 users,  load average: 0.20, 0.25, 0.17
> Tasks: 362 total,   1 running, 360 sleeping,   1 stopped,   0 zombie
> Cpu0  :  2.0%us,  0.0%sy,  0.0%ni, 96.7%id,  1.3%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu1  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu2  :  7.6%us,  1.3%sy,  0.0%ni, 91.1%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu3  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu4  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu5  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu6  :  0.7%us,  0.0%sy,  0.0%ni, 99.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu7  :  1.6%us,  0.0%sy,  0.0%ni, 98.4%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu8  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu9  :  0.3%us,  0.3%sy,  0.0%ni, 99.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu10 :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu11 :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu12 :  1.6%us,  0.0%sy,  0.0%ni, 98.4%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu13 :  2.6%us,  0.7%sy,  0.0%ni, 96.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Cpu14 :  1.7%us,  0.7%sy,  0.0%ni, 97.4%id,  0.0%wa,  0.0%hi,  0.0%si,  0.3%st
> Cpu15 :  0.3%us,  0.0%sy,  0.0%ni, 99.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Mem:  12968960k total, 12815264k used,   153696k free,   152472k buffers
> Swap:        0k total,        0k used,        0k free, 11656392k cached
> 
> 
> 
> --
> Gregor
> 
> 
> 
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