Hi,

Initially, when the VM is started, it consumes only 200 MB, because the
QEMU process
allocates memory from the OS only when accessed by the VM. Once the VM uses
26 GB,
QEMU process will also use at least 26 GB.

The ballooning starts shrinking the VM, only if the free memory on the host
is below
a threshold, by default 20%. And it will grow the VM back if the free
memory is above
the threshold. So once it stabilizes, the host will be using around 80% of
memory.

If the host has 30 GB of memory, 80% is 24 GB, so the ballooning seems to be
working correctly.


Regards,
Andrej


On Thu, 2 Aug 2018 at 12:38, <jeanbapti...@nfrance.com> wrote:

> Hi,
>
> Does I need to activate for Clusters / Hosts, something more than:
>
> On my Cluster > Optimization > Memory Balloon > Enable Memory Balloon
> Optimization
> I've already reboot / take in maintenance and Force MOM policy several
> time since I try to make work Balloon
>
> How to check if MoM work on my host ? Which logs does I need to have if
> MoM work as expected ?
>
> Thanks
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