dest: 
root     11996  0.1  1.8 1401804 37596 ?       Ssl  18:51   0:01 /usr/sbin/libvirtd
ubuntu   12251  0.0  0.0  21268  1072 pts/17   S+   19:08   0:00 grep --color=auto libvirtd

source
root       879  0.0  0.4 1402964 39452 ?       Ssl  18:35   0:07 /usr/sbin/libvirtd
root     10751  0.0  0.0  22836  1012 pts/19   S+   23:37   0:00 grep --color=auto libvirtd