Average I/O stalls

 57,082 0 ,
This is a general indicator of performance problems. High stall times indicate I/O problems, which can be attributed to busy physical disks or queries that return large data sets to the client. Read more

Number of unused indexes

 18,331 0
Use this metric if you want to monitor the number of indexes per database that haven't been used for the last month. Indexes that aren't in use should be removed because they can degrade INSERT, UPDATE and DELETE performance, and they use storage space. Read more

Number of ascending statistics

 6,813 0
This metric returns the number of ascending statistics per database. A common problem relating to distribution statistics is associated with “ascending value columns” in a table. Read more

Top buffer cache object

 14,118 0 ,
This metric measures the amount of memory used in the buffer cache by the largest object (based on the number of pages). It checks the sys.dm_os_buffer_descriptors to identify the object, and returns the relative percentage used. Read more

Hash warnings (last hour)

 16,951 0 ,
This metric measures the number of hash warnings events in the last hour. A hash warning event means that part of the data processed for a hash operation was written to tempdb. Read more

What are custom metrics?

The Redgate 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 Redgate 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 Redgate 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.

See the Getting Started guides

What is Redgate Monitor?

Redgate 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.

Find out more about Redgate Monitor

Featured custom metrics

  • Total database file size

    by Hugo Kornelis | 8,325 views |

    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 Redgate Monitor Team | 6,365 views |

    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 | 5,785 views |

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

See all custom metrics