摘要： 1. OS level:SELECT wait_type, waiting_tasks_count, wait_time_ms, max_wait_time_ms, signal_wait_time_ms FROM sys.dm_os_wait_stats ORDER BY wait_type;-- The DMV accumulates values since the server was last restarted. If you want to reset its values, run the following code DBCC SQLPERF('sys.d... 阅读全文