---
title: "Set evaluation behavior | Grafana Labs"
description: "Create an evaluation group, then set the pending period and keep firing for."
---

> For a curated documentation index, see [llms.txt](/llms.txt). For the complete documentation index, see [llms-full.txt](/llms-full.txt).

# Set evaluation behavior

Evaluation behavior sets how often Grafana runs your query, how long a problem must last before the alert fires, and how long the alert keeps firing after the condition resolves.

In this milestone, set the evaluation interval, pending period, and keep-firing period.

1. Set **Evaluation interval** to **1m**.
2. Set **Pending period** to **1m**. Brief spikes get filtered out, but a real problem fires quickly.
3. Set **Keep firing for** to **0s** so the alert stops firing when the condition resolves.

Your evaluation schedule is set. Next, you confirm no-data and error handling.