> For the complete documentation index, see [llms.txt](https://docs.datasentinel.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.datasentinel.io/manual/features/tips-and-hints/wait-event-description.md).

# Wait Event Description

It represents a situation where a process is pausing its operation, waiting for a certain condition to be met or a resource to become available.

### Wait Events

By analyzing these wait events, users can identify what resources or conditions are causing delays.

In the [Session History](/manual/features/key-features/session-history.md) dashboard, located in the bottom left, you'll find an option that allows you to group the workload by wait events.

Accompanying each wait event is a question mark icon, which, when hovered over, reveals a description of the event.

Given the extensive variety of wait events in PostgreSQL, as detailed in the [PostgreSQL documentation](https://www.postgresql.org/docs/current/monitoring-stats.html#WAIT-EVENT-ACTIVITY-TABLE), merely knowing the event's name may not suffice for a comprehensive understanding of what happened.

{% hint style="info" %}
This is where the tooltip feature, offering a full description of each event, becomes immensely beneficial.
{% endhint %}

<figure><img src="/files/m9AT1dZu4UiGwd6TvLsj" alt=""><figcaption></figcaption></figure>

### Wait Event Types

PostgreSQL categorizes wait events into various types, such as I/O waits, lock waits, network waits, and more.

A **wait event type** refers to a specific category under which various wait events are classified. These types represent different kinds of operations or resources that a database process may need to wait for during its execution.

<figure><img src="/files/zzo4wOJcWuOUMxTvN0UC" alt=""><figcaption><p>Session History Dashboard Displaying Workload Grouped by Wait Event Types</p></figcaption></figure>

{% hint style="info" %}
In the [Session History](/manual/features/key-features/session-history.md) dashboard, you have the flexibility to organize the workload either by wait event types or specific wait events.

This grouping can be applied both within the timeline chart and/or in the bottom left section of the dashboard, offering a comprehensive view of your database's performance dynamics.
{% endhint %}


---

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