---
stage: Monitor
group: APM
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
---

# Performance Bar

You can display the GitLab Performance Bar to see statistics for the performance
of a page. When activated, it looks as follows:

![Performance Bar](img/performance_bar.png)

From left to right, it displays:

- **Current Host**: the current host serving the page.
- **Database queries**: the time taken (in milliseconds) and the total number
  of database queries, displayed in the format `00ms / 00 (00 cached) pg`. Click to display
  a modal window with more details:
  ![SQL profiling using the Performance Bar](img/performance_bar_sql_queries.png)
- **Gitaly calls**: the time taken (in milliseconds) and the total number of
  [Gitaly](../../gitaly/index.md) calls. Click to display a modal window with more
  details:
  ![Gitaly profiling using the Performance Bar](img/performance_bar_gitaly_calls.png)
- **Rugged calls**: the time taken (in milliseconds) and the total number of
  [Rugged](../../nfs.md#improving-nfs-performance-with-gitlab) calls.
  Click to display a modal window with more details:
  ![Rugged profiling using the Performance Bar](img/performance_bar_rugged_calls.png)
- **Redis calls**: the time taken (in milliseconds) and the total number of
  Redis calls. Click to display a modal window with more details:
  ![Redis profiling using the Performance Bar](img/performance_bar_redis_calls.png)
- **Elasticsearch calls**: the time taken (in milliseconds) and the total number of
  Elasticsearch calls. Click to display a modal window with more details.
- **Load timings** of the page: if your browser supports load timings (Chromium
  and Chrome) several values in milliseconds, separated by slashes.
  Click to display a modal window with more details. The values, from left to right:
  - **Backend**: time needed for the base page to load.
  - [**First Contentful Paint**](https://web.dev/first-contentful-paint/):
    Time until something was visible to the user.
  - [**DomContentLoaded**](https://developers.google.com/web/fundamentals/performance/critical-rendering-path/measure-crp) Event.
  - **Total number of requests** the page loaded:
    ![Frontend requests using the Performance Bar](img/performance_bar_frontend.png)
- **Trace**: If Jaeger is integrated, **Trace** links to a Jaeger tracing page
  with the current request's `correlation_id` included.
- **+**: A link to add a request's details to the performance bar. The request
  can be added by its full URL (authenticated as the current user), or by the value of
  its `X-Request-Id` header.
- **Download**: a link to download the raw JSON used to generate the Performance Bar reports.
- **Request Selector**: a select box displayed on the right-hand side of the
  Performance Bar which enables you to view these metrics for any requests made while
  the current page was open. Only the first two requests per unique URL are captured.

## Request warnings

Requests exceeding predefined limits display a warning **{warning}** icon and
explanation next to the failing metric. In this example, the Gitaly call duration
exceeded the threshold:

![Gitaly call duration exceeded threshold](img/performance_bar_gitaly_threshold.png)

If any requests on the current page generated warnings, the warning icon displays
next to the **Request selector**:

![Request selector showing two requests with warnings](img/performance_bar_request_selector_warning.png)

Requests with warnings display `(!)` after their path in the **Request selector**:

![Request selector showing dropdown](img/performance_bar_request_selector_warning_expanded.png)

## Enable the Performance Bar via the Admin panel

The GitLab Performance Bar is disabled by default. To enable it for a given group:

1. Sign in as a user with Administrator [permissions](../../../user/permissions.md).
1. In the menu bar, click **Admin Area**.
1. Navigate to **Settings > Metrics and profiling**
   (`admin/application_settings/metrics_and_profiling`), and expand the section
   **Profiling - Performance bar**.
1. Click **Enable access to the Performance Bar**.
1. In the **Allowed group** field, provide the full path of the group allowed
   to access the GitLab Performance Bar.
1. Click **Save changes**.

## Keyboard shortcut for the Performance Bar

After enabling the GitLab Performance Bar, press the [<kbd>p</kbd> +
<kbd>b</kbd> keyboard shortcut](../../../user/shortcuts.md) to display it, and
again to hide it.
