01 May 2020

Available Worker Threads

by Eelco Drost

Rating: 0.0/5 (0 votes cast)

908 0 Performance

Metrics install automatically if you have SQL Monitor installed.

If you are using Redgate’s SQL Server monitoring tool, SQL Monitor, you can instantly install and run this metric on your servers.

Metric checking available worker threads on Availability Groups.

Metric definition

Name

Available Worker Threads

Description

Metric checking available worker threads on Availability Groups

The T-SQL query that will collect data


		
			DECLARE @max INT;
SELECT  @max = max_workers_count
FROM    sys.dm_os_sys_info;

SELECT  @max - SUM (active_workers_count) AS [AvailableThreads]
FROM    sys.dm_os_schedulers
WHERE   status = 'VISIBLE ONLINE';
			
				
					
				
					1
2
3
4
5
6
7
				
						DECLARE @max INT;
SELECT  @max = max_workers_count
FROM    sys.dm_os_sys_info;
 
SELECT  @max - SUM (active_workers_count) AS [AvailableThreads]
FROM    sys.dm_os_schedulers
WHERE   status = 'VISIBLE ONLINE';

Instances to collect from

Availability Groups

Databases to collect from

Availability Groups

Collection frequency

1 min

Use collected or calculated values

Leave the Use a calculated rate of change between collections check box unchecked

Metric collection

Enabled

Alert definition

N/A

908 Rate

Rating: 0.0/5 (0 votes cast)

What are custom metrics?

The SQL Monitor custom metric feature lets you run T-SQL queries against your SQL Servers to collect specific data. You can analyze and receive alerts about your custom data just like everything else SQL Monitor collects.

But what if you don’t want to write your own queries? No problem. Redgate has brought together a range of quality custom metrics for you to use in SQL Monitor, which are all are free, tried and tested. You can install straight away, and use the resources on this site to help you write your own.

What is SQL Monitor?

SQL Monitor is a SQL Server performance monitoring tool that gives you real-time and historical SQL Server performance data with alerts and diagnostics.

With its embedded expertise from SQL Server experts and MVPs, it gives you the information and advice you need to find and fix issues before users are even aware.

Featured custom metrics

Total database file size

by Hugo Kornelis | 3,838 views | Memory Performance Storage

This custom metric measures the total database file size (data files and log file combined). An increase in this metric signals that a database was grown. When not done by the DBA, this is an autogrow. Excessive autogrow events should be prevented as this can result to file fragmentation. Try to manually grow files before […] Read more

Number of active backups and restores

by SQL Monitor Team | 3,135 views | Performance

This metric will display the total number of active backups and restores on a server. This can be used to correlate with other metrics to explain why disk IO and CPU usage could have changed. Read more

Full backup to odd path

by Eelco Drost | 2,658 views | Compliance

This custom metric queries the MSDB database to search for multiple paths for a full backup Read more

Available Worker Threads

Metric definition

Name

Description

The T-SQL query that will collect data

Instances to collect from

Databases to collect from

Collection frequency

Use collected or calculated values

Metric collection

Alert definition

What are custom metrics?

What is SQL Monitor?

Featured custom metrics

Total database file size

Number of active backups and restores

Full backup to odd path

Find metrics