# How to set the default interval to 15 minutes for all users and switch to manual metrics refresh in Grafana PMM?

**URL:** https://forums.percona.com/t/how-to-set-the-default-interval-to-15-minutes-for-all-users-and-switch-to-manual-metrics-refresh-in-grafana-pmm/40186
**Category:** PMM 3.x
**Created:** [February 10, 2026, 3:04pm UTC](https://forums.percona.com/t/how-to-set-the-default-interval-to-15-minutes-for-all-users-and-switch-to-manual-metrics-refresh-in-grafana-pmm/40186 "2026-02-10T15:04:44Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![ANDiv1976](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andiv1976/32/20170_2.png) [@ANDiv1976](https://forums.percona.com/u/ANDiv1976)
#### Post date: [February 10, 2026, 3:04pm UTC](https://forums.percona.com/t/how-to-set-the-default-interval-to-15-minutes-for-all-users-and-switch-to-manual-metrics-refresh-in-grafana-pmm/40186/1 "2026-02-10T15:04:44Z")

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Hi!

Percona Monitoring and Manager is connected to about 130 hosts and approximately 150 PostgreSQL services. A very large number of metrics arrive over 12 hours. By default, in the PMM Grafana, the setting is for the last 12 hours, across all hosts, with auto-refresh every 1 minute. These settings cause the queries to include a massive number of records, and ClickHouse loads all CPU cores and the SSD, leading to the PMM server freezing. How can these default settings be changed for everyone? Also, so that a specific server from the list is selected by default for retrieving metrics, instead of “ALL”.

Thank you!

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<div class="post-metadata">

### Author: ![Yunus](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/yunus/32/6430_2.png) [@Yunus](https://forums.percona.com/u/Yunus)
#### Post date: [February 11, 2026, 3:18am UTC](https://forums.percona.com/t/how-to-set-the-default-interval-to-15-minutes-for-all-users-and-switch-to-manual-metrics-refresh-in-grafana-pmm/40186/2 "2026-02-11T03:18:04Z")

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You can set `min_refresh_interval` in

```auto
# Minimum dashboard refresh interval. When set, this will restrict users to set the refresh interval of a dashboard lower than given interval. Per default this is 5 seconds.
# The interval string is a possibly signed sequence of decimal numbers, followed by a unit suffix (ms, s, m, h, d), e.g. 30s or 1m.
min_refresh_interval = 5m

```

by logging into docker container and

under `/usr/share/grafana/conf/defaults.ini`

And then restart grafana

```auto
supervisorctl restart grafana

```

defaultTimeOffset = 1h

Are you using the PMM servers as per the requirements?

> **[Percona Monitoring and Management - Hardware and system requirements](https://docs.percona.com/percona-monitoring-and-management/3/install-pmm/plan-pmm-installation/hardware_and_system.html)**
>
> To ensure optimal performance for your monitoring environment, check the appropriate hardware specifications before installing PMM.

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<div class="post-metadata">

### Author: ![ANDiv1976](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/andiv1976/32/20170_2.png) [@ANDiv1976](https://forums.percona.com/u/ANDiv1976)
#### Post date: [February 11, 2026, 6:45am UTC](https://forums.percona.com/t/how-to-set-the-default-interval-to-15-minutes-for-all-users-and-switch-to-manual-metrics-refresh-in-grafana-pmm/40186/3 "2026-02-11T06:45:43Z")

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Thank You!

Is there a similar option to set some server as default in the selection? So it’s not - all.

![изображение](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/3X/6/9/69ee0d855a0466628ed01e562301b0d3401e6463.png)

How to set the default parameter? To make it 1 hour instead of 12 hours.