DomainGetCPUStats param about go-libvirt HOT 8 CLOSED

I'm not sure what you're asking here. If you're looking for help decoding the returned TypedParams, check in libvirt.go, there are some examples there that show how it's done. The returned rNparams value is redundant - len(rParams) will tell you the same thing..

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Nparams ，StartCPU，TypedParameterFlags
How to finish the above three request parameters?

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I don’t understand the meaning of these three parameters。

from go-libvirt.

Your best resource for that question is the libvirt documentation for this function, which is here: https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainGetCPUStats

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resultSli, _, err := l.DomainGetCPUStats(*domain, 1, -1, 1, 0)
if err != nil {
	log.Printf("failed to get domainCpuState: %v", err)
	return err
}
for _, value := range resultSli {
	fmt.Printf("cpuState: %v", value)
}

from go-libvirt.

return:
cpuState: {cpu_time {4 1740335852754}}
cpuState: {cpu_time {4 663492372092}}
cpuState: {cpu_time {4 2788674600845}}
cpuState: {cpu_time {4 7265418187967}}
cpuState: {cpu_time {4 62431433010}}
cpuState: {cpu_time {4 20751254614}}
cpuState: {cpu_time {4 596372260237}}
cpuState: {cpu_time {4 233139094885}}

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How does the data returned by the interface help me calculate CPU usage?

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You must take two measurements.
After that substract from second measure first. Divide by number of seconds between two measurements.
Also note that stats for each cpu. So if you need total sum.

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