This metric helps a DBA analyze how well TempDB is working on their server. Knowing more about what is stored in it, and by which process, will greatly help diagnose performance issues. Read more
CXPACKET waits may or may not be an issue for a system, but on an OLTP style system, they can indicate costly queries that are executing and requiring parallelized plans. Read more
A high plan cache hit ratio does not guarantee that all queries are using the cache as well as they might. Knowing the percentage of queries that are satisfied from cache helps you to better understand the plan cache hit ratio value. Read more
This metric shows the percentage of cached plans that are being used more than once. If a plan is cached but never reused, there may be an opportunity to tune your server to work more effectively. Read more
This metric measures the percentage of time spent waiting for CPU resources to service a thread. A high signal wait time for all wait types may indicate that CPUs are being overused, forcing tasks to wait for SQL Server processes. Read more
Excessive counts of Virtual Log Files (VLF) in a transaction log can lead to performance problems with the transaction log, including restore and recovery times. Read more
This is a general indicator of performance problems. Index fragmentation can affect the rate of return for moderate to large tables. If multiple indexes are fragmented throughout the database, then an index maintenance strategy needs to be evaluated. Read more
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
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
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.
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.
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
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
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