Re: [Xen-users] Scrubbing free ram... reboots

[Joaquin Fernandez Piqueras <jfernandez@xxxxxxxxxxx>]

Yes, I tried with "nosmp" and dom0_max_vcpus equal to 1, 2 and 4. And I get the same result. The machine is a dual quad core (with hyperthreading 16vcpus) and 32GB RAM. I don't know where is the problem but it's curious that the problem happens when I decrease dom0_mem under the half of total memory.

Each quad core has 4 dimms of 4GB each (total 16GB), could be possible tha if I decrease dom0_mem under 16GB one physical processor runs out of memory?

Could be possible a bug while xen is scrubbing 16GB of free ram?

It's possible to skip this part (scrubbing free ram) to test if the problems continue?

Thanks,
Quimi

>Does this happen when you set dom0_max_vcpus too?
>
>Cheers,
>Alex

Hi,

I'm testing a Debian Squeeze with Xen 4.0.1 in a machine with 32GB of RAM. If I setup dom0_mem=16G or less, I get a backtrace during "scrubbinf free ram" and then reboots.

Is there any limitation in the amount of free ram? I googled a lot and I didn't find thje solution, any idea?

Thanks in advance,

Quimi

-- 
JOAQUIM FERNÁNDEZ
Serveis Informàtics TSC
Tel. 934011067 / 934011845

Dept. Teoria del Senyal i Comunicacions
UNIVERSITAT POLITEC. DE CATALUNYA 
Jordi Girona 1-3, Campus Nord, D4-006
08034 BARCELONA

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