alter view cpu_percent
as
select
top 256 record_id,
dateadd(ms, -1 * ( (select cpu_ticks / convert(float, ms_ticks) from sys.dm_os_sys_info) - [timestamp]), GetDate()) as EventTime,
SQLProcessUtilization,
SystemIdle,
100 - SystemIdle - SQLProcessUtilization as OtherProcessUtilization
-- system idle 값과 SQLProcessUtilization 값을 이용해서 SQL 외 cpu 사용율을 계산 합니다.
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 asc
Important: 