signal_wait_time_ms – Database Research & Development https://www.dbrnd.com BIGData | NoSQL | MSSQL | MySQL | PostgreSQL Tue, 19 Sep 2017 11:16:56 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.6 SQL Server: Script to find CPU Pressure using Signal Wait Time https://www.dbrnd.com/2015/11/sql-server-script-to-find-cpu-pressure-using-signal-wait-time/ Fri, 13 Nov 2015 16:08:20 +0000 https://www.dbrnd.com/?p=944

In this post, I am sharing a SQL Script to find CPU Pressure using SignalwaitTime wait type in SQL Server.

Sometimes, Running queries are waiting for resources and SQL Server records related wait type.
We can analyze wait stats and take decision accordingly.

In this script, I am showing one Signalwait stats for measuring the pressure of the CPU.
The Higher Signalwait stats are not good for the system performance. 

USE Master
GO
SELECT 
	SUM(signal_wait_time_ms) AS TotalSignalWaitTime 
	,(SUM(CAST(signal_wait_time_ms AS NUMERIC(20, 2)))
	/SUM(CAST(wait_time_ms AS NUMERIC(20, 2))) * 100)
	AS SignalWaitsOfTotalTimeInPercentage
FROM sys.dm_os_wait_stats
GO

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