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Volcengine Managed Service for Prometheus

Workspace

Slow queries

A slow query refers to a PromQL query statement whose execution duration exceeds the preset threshold (5 seconds). Such queries are usually inefficient, consume a large amount of resources, and may even affect the writing of monitoring data.

You can use the slow query feature to identify high-risk queries with durations exceeding 5 seconds, optimize PromQL statements to improve query efficiency, and configure blocking policies for fine-grained management of resource-intensive queries.

Limits

Limit	Description
Time range	You can query slow PromQL query data generated within the last 30 days at most.
Display limit	Up to 50 slow PromQL query data entries are displayed for each query.

Procedure

In the top navigation bar, select the project and region where your business is located.

In the left navigation bar, click VMP > Workspace.

After you click the name of the target workspace, click Slow query in the left navigation bar.

Set the data time range and refresh interval (optional): By default, slow PromQL query data in the last 30 minutes is displayed, and the refresh interval is Manual refresh. You can set the data time range and refresh interval for slow PromQL query data based on your business requirements.

Serial number	Feature	Description
1	Time range	The time range of slow PromQL query data. Click the current time range, such as Last 30 minutes, and select the target time range. You can query slow PromQL query data in the last 30 days at most.
2	Refresh frequency	The refresh interval of slow PromQL query data. You can select manual refresh or automatic refresh at a specified interval. Manual refresh (default): Click theicon to refresh data. Automatic refresh: Click the current refresh interval, such as Manual refresh, and select the target automatic refresh interval. Supported automatic refresh intervals include Refresh every 1 min, Refresh every 5 min, Refresh every 15 min, Refresh every 30 min, and Refresh every 1 hour. tip The configured automatic refresh interval takes effect temporarily. After you exit the current page, the refresh interval automatically reverts to manual refresh.

View slow PromQL query data, including Slow PromQL Quantity and Slow PromQL List.

Slow PromQL Quantity

Displays a trend chart of the number of slow PromQL queries within a specified statistical period, such as the last 30 minutes.

In the trend chart, click the target time point to view the number of slow PromQL queries generated from the previous minute to the time point.

Slow PromQL List

Displays up to 50 recent data entries. By default, the data entries are sorted by average time. You can click the sort by drop-down list to change the default sorting method to maximum time or execution time.

You can also perform the following operation on the target data:

Feature	Description
Copy PromQL	Click Copy PromQL to reuse the query logic of the target data and apply it in other scenarios, such as the PromQL match rules in PromQL blocking policies.
View details	Click View details to view the details of the target data.
ban	Click ban to configure the PromQL blocking policy to prohibit the target account from using this PromQL query capability. For specific operations, see Creating PromQL blocking policies.

Last updated: 2026.07.10 11:37:30