Re: [Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 25/5/07 13:57, "Tomasz Chmielewski" <mangoo@xxxxxxxx> wrote:

>>>> I inspected the logs, and it was the OOM-killer. Should it ever happen
>>>> when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB
>>>> total), Xen guest 1.7 GB.
>>> It appears that saving of HVM somains needs more memory: in this
>>> particular case, when I increased memory for dom0, about 350 MB RAM was
>>> used in total during the domain save.
>> 
>> That's kind of surprising, but I guess totally plausible if you don't
>> configure a swap partition for dom0?
> 
> No - dom0 has a 2 GB swap partition.

Hmmm... That's not so explicable. Obviously something in save/restore is
causing unpageable allocations to happen. Could be pagetables for mappings
of HVM guest memory, or something like that. Needs investigating further, I
think.

 -- Keir


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