MSSQL CPU 사용량 확인

declare @ms_now bigint
select @ms_now = ms_ticks from sys. dm_os_sys_info ;
select record_id ,
       dateadd (ms , - 1 * ( @ms_now - [timestamp] ), GetDate ()) as [EventTime],
       SQLProcessUtilization ,
       100 - ( SystemIdle + SQLProcessUtilization) as [OtherProcessUtilization] ,
       100 - SystemIdle as [Total CPU Usage]
from (
       select
             record .value ( '(./Record/@id)[1]', 'int') as record_id ,
             record .value ( '(./Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]' , 'int' ) as SystemIdle ,
             record .value ( '(./Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]' , 'int' ) as SQLProcessUtilization ,
             [timestamp]
       from (
             select timestamp , convert ( xml, record) as record
             from sys . dm_os_ring_buffers
             where ring_buffer_type = N'RING_BUFFER_SCHEDULER_MONITOR'
             and record like '%<SystemHealth>%'
       ) as x
) as y
order by record_id desc