Can we use irq balance on OVM guest VM?

Hi,

I know there is Damon service irqbalance on Linux, but when I started it on OVM VM, it looks dose not work, as the interrupts not distributed on all VCPUs as below shown:

[root@otdsrv1 etc]# cat /proc/interrupts|head -1; cat /proc/interrupts|grep eth

            CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7     

107:    7487375          0          0          0          0          0    1282504        207   xen-dyn-event     eth0-tx

108:    7048891          0          0          0          0          0          0    1191894   xen-dyn-event     eth0-rx

only two VCPUs from 8 VCPUs got receiving interrupts from Ethernet port on my VM.  My Ethernet port is on single queue NIC, but I applied RPS/XPS/RFS on port.

How to optimize if I try to IRQ balance on all available VCPUs on OVM guest VM?