Description of problem: User experience unbearable, when user login to User Portal with 1800 VM's.

Version-Release number of selected component (if applicable):
RHEVM 3.2 - SF17.1 environment: 

RHEVM: rhevm-3.2.0-11.28.el6ev.noarch 
VDSM: vdsm-4.10.2-21.0.el6ev.x86_64 
LIBVIRT: libvirt-0.10.2-18.el6_4.5.x86_64 
QEMU & KVM: qemu-kvm-rhev-0.12.1.2-2.355.el6_4.3.x86_64 
SANLOCK: sanlock-2.6-2.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
Build on BZ880969 scenario
1. On iSCSI DC create 1800 VM's
2. All VM's in “Down” state
3. Add user to “Permissions” management with “PowerUserRole” role, to all those VM's.
4. Login with this user to User Portal
  
Actual results:
1. User experience unbearable, browser try demonstrate all 1800 objects (vm's) on user session
2. Browser Firefox – same time crashed,  browser Chrome same time stuck.
3. All works very slowly
4. No option scroll but fixed mount VM's is possible
5. Same experience I get via “Basic” and “Extended” view

Expected results:
User can get normal user experience

Impact on user:

Workaround:

Additional info:

/var/log/ovirt-engine/engine.log

/var/log/vdsm/vdsm.log