Re: [Qemu-devel] [question] How to get the guest physical memory usage from host?

[Zhang Haoyu <zhhy.zhanghaoyu@gmail.com>]

On 2014/12/22 17:16, Andrey Korolyov wrote:
> On Mon, Dec 22, 2014 at 11:57 AM, Zhang Haoyu <zhhy.zhanghaoyu@gmail.com> wrote:
>>
>> On 2014/12/22 16:41, Andrey Korolyov wrote:
>>> On Mon, Dec 22, 2014 at 6:59 AM, Zhang Haoyu <zhhy.zhanghaoyu@gmail.com> wrote:
>>>> Hi,
>>>>
>>>> How to get the guest physical memory usage from host?
>>>> I don't want to introduce a guest-agent to get the info.
>>>>
>>>> Thanks,
>>>> Zhang Haoyu
>>>>
>>>
>>> There`s probably one approach, simular to (currently abandoned)
>>> virt-dmesg, via peeking to the guest memory directly. What are reasons
>>> for not leaving this task to agent, as it looks much simpler?
>>>
>> In some cases, we are not permitted to install anything in customer's guest environment.
>>
>> Thanks,
>> Zhang Haoyu
> 
> Ok, looks like memory peeking techniques are only a choice then. And,
> of course, this approach tends to be less flexible, because it depends
> on a relatively strict requirements for running kernel in a guest.
> 
Yes, it should depends on guest os implementation,
because physical memory is managed by OS, which have the full knowledge of memory usage,
so I'm afraid that windows dose not friendly support it.
Could you detail the peeking techniques mentioned above?

Thanks,
Zhang Haoyu