# Diagnosing a Performance Issue Using Workload Profiling

This topic illustrates how to use the workload profiling views in the information\_schema database to diagnose a performance issue.

## In this section

* [Use Case: Disk Bottleneck](https://docs.singlestore.com/db/v9.1/reference/troubleshooting-reference/diagnosing-a-performance-issue-using-workload-profiling/use-case-disk-bottleneck.md)
* [Use Case: Memory Usage by a Query](https://docs.singlestore.com/db/v9.1/reference/troubleshooting-reference/diagnosing-a-performance-issue-using-workload-profiling/use-case-memory-usage-by-a-query.md)

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Modified at: December 6, 2021

Source: [/db/v9.1/reference/troubleshooting-reference/diagnosing-a-performance-issue-using-workload-profiling/](https://docs.singlestore.com/db/v9.1/reference/troubleshooting-reference/diagnosing-a-performance-issue-using-workload-profiling/)

(An index of the documentation is available at /llms.txt)