CPU usage from Host via Enterprise Manager

SELECT Target_name,
       Metric_name,
       Column_label,
       collection_timestamp,
       alert_state,
       alert_duration,
       MESSAGE
  FROM MGMT$alert_history
 WHERE target_guid = 'CFCF659B637812777B6F46E05A19E47F'
 and metric_column='cpuUtil' order by collection_timestamp;