virsh command that displays the cpu and memory consumption?

Question

I want to know if there is a command virsh to display the cpu and memory consumption of each machine virtual. I created the virtual machine using KVM in ubuntu system.

Solution 1

The command dommemstat can give you memory stats for a specific domain and with domstats you can get plenty of stats for all domains or just the specified. You can pass the parameter --cpu-total to see the total in the moment.

First get a virsh interactive console by typing virsh on your command line and then, once inside virsh's console, issue the following command:

virsh # domstats --cpu-total

The previous command will give you the CPU stats for all domains. If you have virt-manager you can see live some graphs and other nice stats, and if you want to collect them for a time you would need some other tool, I would recommend collectd and its 'virt' plugin

Solution 2

Nadya Nux: The command 'domstat --cpu-total' is executed within 'virsh' console, not from bash. So you have basicly two ways to do it.

First:

user@yourserver:~# virsh domstats --cpu-total

Second:

user@yourserver:~# virsh
virsh # domstats --cpu-total

Hope it helps better copy&paste to new readers as well :)

Comments

[dawud]

At a given time or for a period of time?

[Martian]

Something like virt-top ?

[Nadya Nux]

for a period of time

[Nadya Nux]

i tried domstats --cpu-total and ` dommenstat , i got an error such as unknown command for domstats ` and and empty line for dommenstat I'm not sure what is the problem