[libvirt-users] What does cpu_time returned by virDomainGetCPUStats mean?
hi, everyone.
I find an 'interesting' thing involving virDomainGetCPUStats(). I
call it for cpu usage consumed by a domain and get a array of
virTypedParameter. My system is 2-core and hyperviser return 1
parameter per cpu. So the contents of the array is like this.
virTypedParameter[0]
{
.fiedl = "cpu_time"
.type = 4
.value.ul = 51640610899
}
virTypedParameter[1]
{
.field = "cpu_time"
.type = 4
.value.ul = 55302820304
}
I thought this value store the run time of the cpu since last boot.
But I find I was wrong because this value would increase until it
wraps down and doesn't reset even the domain is restarted.
So, what does this value mean?
How can I get the CPU usage of the domain?
I found nothing on the API reference doc page:-(. No word is
related with the meaning of the returned array of virTypedParameter by
virDomainGetCPUStats().