Вот что по твоей виртуозе:
* RAM is shared – If the server doesn’t have enough RAM, Virtuozzo struggles and usually will fail since the system depends on virtual RAM. Ultimately, it will kill processes when it runs out of RAM
* Lack of device support – In some cases, Virtuozzo won’t allow custom devices. For example, VPNs
* Resource sharing isn’t great – The resource sharing of Virtuozzo isn’t that great. If one user is using resources heavily, it can slow things down.