问题
I'm use wmic command to get current CPU utilization, the command are:
wmic cpu get LoadPercentage /value
It's works fine at first, but somehow it doesn't shows the LoadPercentage, but always returns with empty result like:
C:\Users\Administrator>wmic cpu get LoadPercentage /value
LoadPercentage=
It's so weird and I'm pretty sure that the result don't match with the taskmgr.exe. I also tried this command without /value, the result is still the same.
I have copy a large file in my server, and the CPU usage in TaskManager and wmic is like:
no matter what value is in TaskManager, the wmic always return empty value.
回答1:
I understand that this is an answer for a necro post. But as I can't see any correct answer here, the solution is lodctr /R . This command will reload counters. Must use a capital R, lower case 'r' returns an error. Remember Admin Privs as well.
回答2:
Use below mentioned powershell query for the same:
gwmi Win32_PerfFormattedData_PerfOS_Processor | select PercentProcessorTime
来源：https://stackoverflow.com/questions/24503084/wmic-cpu-get-loadpercentage-always-returns-empty-value