The top command output is showing the following on the node:
PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                  
30219 qemu      20   0 5040176 4.048g  13564 S 113.2  3.2  16:05.49 qemu-kvm                                                                                 
 6178 root      15  -5 1495476  48092  10676 S  28.1  0.0 300:58.82 supervdsmServer                                                                          
  361 root      25   5       0      0      0 S   7.0  0.0 333:14.58 ksmd                                                                                     
  265 root      rt   0       0      0      0 S   2.6  0.0   0:06.80 migration/32                                                                             
27504 qemu      20   0 5137240 4.412g  13516 S   2.6  3.5  10:53.39 qemu-kvm                                                                                 
30222 root      20   0       0      0      0 S   2.0  0.0   0:11.98 vhost-30219                                                                              
 6329 vdsm       0 -20 3258204 151772  13004 S   0.7  0.1  65:29.75 vdsm          
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Please tell me what should I do to improve the video performance. 
Thank You