Reference - default performance counters

Kentico EMS required

Features described on this page require the Kentico EMS license.

The following table lists the default counters that are pre-defined in the counters.xpc file and registered in Windows by default:

Counter name

Category

Description

Values written by

Allocated memory in MB

Global

The size of memory allocated by the application in Megabytes.

Application

Cache expired items/sec

Global

The number of expired cache items per second.

Application

Cache removed items/sec

Global

The number of items removed from cache per second.

Application

Cache underused items/sec

Global

The number of underused cache items per second.

Application

Content page views/sec

Global and Sites

The number of content pages viewed per second.

Application

E-mails in queue

Global and Sites

The number of e-mails in the E-mail queue.

Application or Windows service*

Error e-mails in queue

Global and Sites

The number of e-mails in the E-mail queue whose sending failed.

Application or Windows service*

Errors

Global

The number of errors in event log since last application restart.

Application

File downloads/sec

Global and Sites

The number of files downloaded per second.

Application

Non-page requests/sec

Global

The number of non-page requests per second.

Application

On-line users – total

Global and Sites

The total number of on-line users.

Application

On-line users – authenticated

Global and Sites

The number of authenticated on-line users.

Application

On-line users – anonymous

Global and Sites

The number of anonymous on-line users.

Application

Pages not found/sec

Global and Sites

The number of not found pages (404 error) per second.

Application

Pending requests/sec

Global

The number of pending page requests per second.

Application

Robots.txt views/sec

Global and Sites

The number of robots.txt page requests per second.

Important: For values to be written to this counter, IIS must be configured to handle .txt extensions. See Extensionless and custom URLs.

Application

Running SQL queries

Global

The number of running SQL queries.

Application

Running threads

Global

The number of running threads.

Application

Scheduled tasks running

Global

The number of running scheduled tasks.

Application

Scheduled tasks in queue

Global

The number of scheduled tasks in the queue.

Application or Windows service*

System page views/sec

Global

The number of system pages viewed per second.

Application

Warnings

Global

The number of warnings in event log since the last application restart.

Application

* The Windows service is used to write values to these counters only if it is installed and if the Use external service option is enabled in Settings -> System -> Health monitoring.

You can also define custom counters to monitor other system values.