---
title: Monitoring using the Performance monitor
related:
  - https://docs.kentico.com/k12sp/configuring-kentico/health-monitoring/registering-performance-counters.md
  - https://docs.kentico.com/k12sp/configuring-kentico/health-monitoring/installing-the-health-monitoring-windows-service.md
  - https://docs.kentico.com/k12sp/configuring-kentico/health-monitoring/enabling-health-monitoring.md
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

> **Info:** **Kentico EMS required**
>
> Features described on this page require the **Kentico EMS** license.

When you have registered the performance counters for your instance of Kentico in Windows and you have enabled Health monitoring settings in the Kentico administration interface, you can start monitoring values written to the counters. You can use several applications for this purpose, but this page describes how to use the **Performance monitor**, which is a native part of Windows.

To monitor values of Kentico counters using the Performance monitor:

1. Type _perfmon_ in Windows Start menu search box and press _Enter_.

   - The system launches the **Performance monitor**.
2. Select **Monitoring Tools -> Performance monitor** in the navigation tree.

   - As you can see, only the default **% Processor Time** counter is monitored initially.
3. Click the **Add**.

   ![Image2013 2 20+10 59 49](https://docs.kentico.com/docsassets/k12sp/monitoring-using-the-performance-monitor/image2013-2-20+10-59-49.png)
4. From the **Select counters from computer** list, choose **\<Local computer>**.

   - In the section below, you will see a list of all counter categories currently registered in Windows.
5. Select the **Kentico - General (\<IIS path>/\<IIS website>)**.
6. Click **Add >>**.
7. Select **Kentico - Sites (\<IIS path>/\<IIS website>)**.
8. Click **Add >>**.

   ![Image2013 2 20+11 3 18](https://docs.kentico.com/docsassets/k12sp/monitoring-using-the-performance-monitor/image2013-2-20+11-3-18.png)

   - Added counters will be added to the **Added counters** list on the right.
9. Click **OK**.

Back in the monitoring UI you can now see that the Performance monitor displays the values in counters in the graph. The values reflect the real activity of the Kentico instance. You can switch between different ways how monitored values are displayed using the **Graph type** drop-down list.

![Image2013 2 20+11 9 27](https://docs.kentico.com/docsassets/k12sp/monitoring-using-the-performance-monitor/image2013-2-20+11-9-27.png)

## Clearing counter values

1. Log in to the Kentico administration interface.
2. Open the **System** application.
3. On the **General** tab, click **Clear performance counters**.

This action clears values stored in all counters registered for the current Kentico instance.